Long before anything resembling Thailand existed, the basin of the Chao Phraya River — the great central plain — was inhabited by the Mon people, who between the 6th and 10th centuries built the Dvaravati culture. It was not a centralised empire but a network of walled Buddhist city-states surrounded by moats, with centres such as Nakhon Pathom, U Thong, Lavo (today's Lopburi) and Si Thep. Dvaravati was one of the first gateways for Indian culture and Theravada Buddhism into mainland Southeast Asia, and it left a deep mark on the art, writing and religion of everything that came after.
This period is foundational but also elusive: it is known mainly through its ruins, its coins, its stone Buddha images and a handful of inscriptions. The Mon never formed a strong, unified state, and over time they were absorbed by more aggressive neighbouring powers. Even so, their legacy survives: the Theravada Buddhism practised today by nine out of ten Thais arrived by this route, and many of the cities the Mon founded remained centres of power for centuries.
The Tai — the people who would eventually give the country its name — were not yet the main players. They came from what is now southern China and migrated slowly southwards along the river valleys, settling first in small mountain principalities called 'mueang'. Only when that migratory trickle became a majority presence, and when the old powers fell into crisis, did the Tai go from subjects to sovereigns.
From the 11th century on, the great power in the region was the Khmer empire, centred on Angkor in present-day Cambodia. As they expanded westwards, the Khmer absorbed the Dvaravati city-states and turned places such as Lopburi (Lavo) into strongholds under their control. For two or three centuries, much of what is now central and northeastern Thailand lay within Angkor's orbit or paid it tribute.
The Khmer imprint was enormous and can still be seen in the landscape. Angkorian-style stone temples such as those at Phimai or Phanom Rung, in the northeast, or the oldest ruins of Lopburi, bear witness to that rule. The Khmer kept the Hindu-Buddhist culture inherited from the Mon, but they strongly added the idea of the 'devaraja', the god-king, a conception of sacred power that the Thai monarchy would later adopt and which, transformed, lives on in the immense ritual prestige of the king.
By the 12th and 13th centuries, however, Angkor began to weaken through wars, overexploitation and internal crises. That retreat opened a power vacuum in the lands that are now Thailand, just as the Tai principalities had grown enough to fill it. From that combination — a Khmer empire in retreat, a Tai people on the rise — came the first kingdom that Thais recognise as their own.
Around 1238, two Tai chiefs rebelled against the local Khmer governor and founded an independent kingdom in the city of Sukhothai, whose name means 'the dawn of happiness'. One of them, Si Inthrathit, became its first king. Thai tradition regards Sukhothai as the cradle of the nation: the moment when the Tai stopped being vassals of others and began to govern themselves. That account should be taken with some nuance — it was one of several Tai kingdoms that emerged at the same time, and its idealisation is partly a later national construction — but its cultural weight is undeniable.
The kingdom reached its peak under Ramkhamhaeng the Great, who reigned at the end of the 13th century (roughly 1279-1298) and extended his influence south towards the Malay Peninsula, west towards present-day Burma, and northeast towards Laos. He is credited with creating the Thai alphabet: a stone inscription from 1292, known as the Ramkhamhaeng stele, describes a prosperous and just kingdom and states that the king himself invented the Tai letters in 1283. The authenticity of that stele is the subject of legitimate academic debate — some specialists argue it may have been written later — but it remains one of the founding documents of Thai identity.
Sukhothai also shone for its art: walking Buddhas with flowing lines, the glazed ceramics known as 'sangkhalok' that were exported throughout Southeast Asia and even to China, and a serene, elegant temple architecture. It was a relatively short-lived kingdom: around 1438 it was absorbed by a younger, more ambitious Tai power growing downriver, Ayutthaya.
In 1351, King Ramathibodi I founded Ayutthaya on an island formed by the confluence of three rivers — the Chao Phraya, the Lopburi and the Pa Sak — a site that was easy to defend and perfect for controlling trade between China, India and the Malay world. Over the following four centuries, Ayutthaya became one of the most powerful and wealthy states in Southeast Asia. European travellers in the 16th century counted it among the three great powers of Asia, along with Vijayanagara and Ming China.
At its height, Ayutthaya was one of the largest and most opulent cities in the world, with hundreds of temples, gilded palaces and, by some estimates, close to a million inhabitants in its area of influence. It was deeply cosmopolitan: it had entire quarters of Portuguese, Chinese, Japanese, Persians, Dutch and French, each community with its church or mosque. Merchants from half the world traded rice, deer hides, precious woods and tin here. In the 17th century, under King Narai, a Greek adventurer named Constantine Phaulkon became de facto prime minister, a sign of just how open the court was to the outside world.
Ayutthaya inherited the idea of the sacred king from the Khmer and developed an absolute monarchy, ritualised and surrounded by meticulous protocol, along with a rigid social system — the 'sakdina' — that assigned each person a numerical rank according to their role. This model of state, court and religion laid the foundations of what would become the modern Thai monarchy. But all that grandeur ended abruptly, in a catastrophe that Thais still remember as a national wound.
Ayutthaya's great enemy was always Burma. The two powers clashed in recurring wars for centuries; as early as 1569 the Burmese had taken the city, although Siam soon regained its independence under the legendary King Naresuan. The final destruction, however, came in the 18th century at the hands of the Burmese Konbaung dynasty, which was especially aggressive and expansionist.
Between 1765 and 1767, a huge Burmese army invaded Siam and laid siege to Ayutthaya. The city held out for fourteen months, but in April 1767 it fell. What followed was systematic devastation: the Burmese burned the palaces and temples, looted and melted down the golden Buddha statues to carry off the metal, and razed the capital to ruins. They took some 30.000 people to Burma — members of the royal family, artisans, scholars — along with archives, works of art and sacred objects. A kingdom more than four centuries old vanished in a matter of months.
The scale of the disaster marked Thai memory like few other episodes. Ayutthaya was never again inhabited as a capital; its ruins, now a World Heritage Site, remain as a testament to what was lost. But Siam did not disappear. In the midst of the chaos, as the country splintered into rival fiefdoms, a general was about to rebuild it with astonishing speed.
The man who saved Siam from collapse was Taksin, a general of Chinese descent who had been governor of Tak province. Present at the fall of Ayutthaya, he managed to escape with a handful of followers and, within a few years, reunified the kingdom and drove out the Burmese garrisons. In 1767 he established a new capital at Thonburi, on the west bank of the Chao Phraya River, opposite present-day Bangkok. Between 1767 and 1771 he subdued the rival lords and restored Siam's unity. It was an extraordinary military feat, but his reign ended in tragedy: accused of mental instability and despotic behaviour, Taksin was deposed in 1782.
His leading general, Chao Phraya Chakri, took power and founded the dynasty that still reigns in Thailand: the Chakri dynasty. Crowned as Rama I, one of his first acts was to move the capital across the river, to a small trading village called Bang Makok, which the world would come to know as Bangkok. There, in 1782, the first stone of the new capital was laid, conceived as a resurrection of Ayutthaya: the Grand Palace was built, the temple of the Emerald Buddha — the most revered in the country — was erected, and canals were dug to recreate the lost splendour.
This period, called Rattanakosin, is that of modern Thailand. The first Chakri kings consolidated the state, compiled and reformed the laws and the Buddhist scriptures, and stabilised the borders. When, in the 19th century, the European powers began to devour Southeast Asia, Siam was once again a solid, centralised kingdom. It would need all that strength to survive what was coming.
In the 19th century, Siam found itself caught between two empires: the British were advancing from Burma and the Malay Peninsula to the west and south, and the French from Indochina to the east. Either of them could have turned it into a colony. That this did not happen was the work, above all, of two kings: Mongkut (Rama IV, 1851-1868) and his son Chulalongkorn (Rama V, 1868-1910).
Mongkut, who had spent decades as a Buddhist monk and spoke English and Latin, opened Siam to the West of his own accord. He signed trade treaties — starting with the Bowring Treaty with Britain in 1855 — that granted Europeans legal and commercial privileges. It was a calculated humiliation: by handing over through diplomacy what elsewhere was taken by force, he deprived the powers of pretexts to invade. His central strategy was to present Siam as a civilised, modern state, and as a useful 'buffer state' between the British and French colonies, something that suited both powers.
Chulalongkorn deepened the modernisation with reforms that transformed the country: he centralised the administration, created European-style ministries, built railways and telegraph lines, reorganised the army and the finances, sent young people to study in Europe and, in a historic move, gradually abolished slavery. The price of survival, however, was territorial: to placate France and Britain, Siam ceded large regions that today belong to Laos, Cambodia and Malaysia. It lost its edges but kept its heart — and, with it, its independence. That is the pride that still defines Thailand: having been, in the whole region, the country that was never a colony.
Modernisation carried a fundamental contradiction: it had created a class of European-educated officials, officers and intellectuals who no longer accepted an absolute monarchy. The Great Depression of the 1930s deepened the crisis, with pay cuts and discontent in the army. On 24 June 1932, a group of young officers and civilians gathered in the Khana Ratsadon — the 'People's Party' — staged a bloodless coup that ended, overnight, centuries of absolute royal power.
King Prajadhipok (Rama VII) was not overthrown: he agreed to negotiate and, on 27 June, promulgated a provisional charter that turned Siam into a constitutional monarchy. Thus was born the first system with a constitution, a parliament and, at least in theory, popular sovereignty. Prominent figures of the new regime included the progressive civilian ideologue Pridi Banomyong and the nationalist, authoritarian soldier Plaek Phibunsongkhram, whose opposing visions would shape the following decades.
The democratic promise, however, was only half kept. In 1935 Prajadhipok abdicated, disappointed by the limits the new power imposed on him. And it soon became clear that the real power lay not with parliament but with the army. With slight variations, that pattern — civilian governments interrupted by military coups — would repeat itself again and again throughout the 20th century and into the 21st. Thailand entered political modernity, but through a door that left it trapped between the ballot box and the barracks.
In 1939, Phibunsongkhram's government changed the country's name from Siam to Thailand, 'the land of the free', as a gesture of Tai nationalism. When war broke out in Asia, that nationalism pushed him towards a risky gamble. On 8 December 1941, Japan invaded Thailand; after barely a few hours of resistance, Phibun signed an armistice and then a military alliance with the Japanese Empire. The calculation was pragmatic: cooperate with Japan in exchange for recovering territories lost to France and Britain in Indochina and Malaya. In 1942, Thailand even declared war on the United States and the United Kingdom.
The collaboration had a sinister side. The Japanese used Thai territory to build the infamous 'Death Railway' between Thailand and Burma, during whose construction tens of thousands of Allied prisoners of war and Asian forced labourers died. The bridge over the River Kwai, near Kanchanaburi, remains a symbol of that horror.
But the country did not speak with one voice. The Thai ambassador in Washington refused to deliver the declaration of war, and inside and outside the country the Free Thai Movement (Seri Thai) emerged, a pro-Allied underground resistance that grew to some 90.000 collaborators and was backed by the regent Pridi Banomyong. Thanks to that double bet — a formal alliance with Japan, real resistance alongside the Allies — when Japan surrendered in 1945 Thailand was able to present itself as a victim rather than an accomplice, avoided being treated as a defeated nation and kept its independence. It was, once again, the old Thai skill of surviving by manoeuvring between powers.
Once the world war was over, Thailand aligned itself firmly with the United States and the Western bloc. The reason was geography: surrounded by countries that were falling to or flirting with communism — China, North Vietnam, later Laos and Cambodia — the Thai monarchy and army saw Washington as the best guarantor against revolution. Thailand sent troops to the Korean War and, in 1954, was a founding member of SEATO, the anti-communist Southeast Asian alliance, headquartered in Bangkok.
During the Vietnam War, the country became a key platform for the US war effort: a large share of the bombers operating over Indochina took off from air bases on Thai soil, and the massive influx of soldiers and dollars transformed the economy and society, with effects that included the boom of sectors such as tourism. In return, the United States propped up successive military governments.
At home, the government faced its own war: between 1965 and 1983, the Communist Party of Thailand waged a guerrilla insurgency, mainly in the rural and mountainous areas of the northeast and north. The conflict died down less through military means than through an amnesty and political reforms, and in 1983 the communist party gave up armed struggle. These decades were also marked by violent internal repression: the massacre of students at Thammasat University in October 1976 remains one of the open wounds of Thai political memory.
The second half of the 20th century turned Thailand into a dynamic economy — rice, industry and, above all, a tourism sector that today welcomes tens of millions of visitors a year — and into a middle-income country with megacities such as Bangkok. For much of that period, the stabilising figure was King Bhumibol Adulyadej (Rama IX), who reigned from 1946 until his death in 2016, almost seventy years, and came to embody national unity above politics. On his death he was succeeded by his son, Maha Vajiralongkorn (Rama X).
Politics, on the other hand, remained turbulent. The country failed to break the cycle of military coups: since 1932 it has seen more than a dozen successful coups. In the 21st century, the rift became personified in Prime Minister Thaksin Shinawatra, a tycoon popular in the countryside and the north but opposed by the Bangkok elite, the army and sections of the monarchy. Thaksin was overthrown in a coup in 2006, and his movement — the 'red shirts' — clashed for years with its opponents — the 'yellow shirts' — in street confrontations that left people dead. Another military coup, in 2014, installed an army-led government that lasted for years.
Public life is also weighed down by the severity of the 'lèse-majesté' laws, which punish criticism of the monarchy with years in prison and which, according to human rights organisations, seriously restrict freedom of expression; since 2020, youth movements have broken a historic taboo by openly calling for reform of the royal institution. In the far south, in the Malay-majority, Muslim-majority provinces, a separatist insurgency active since 2004 has caused thousands of deaths. Thailand thus arrives at the present as a country of contrasts: prosperous and unequal, deeply Buddhist yet plural, proud of never having been a colony and still searching for a balance between the ballot box, the barracks and the throne.
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Central Thailand is a vast alluvial plain watered by the Chao Phraya River and its tributaries, and it is some of the most fertile rice-growing land in the world. It is no coincidence that almost every capital in Thai history (Lavo, Sukhothai on its northern edge, Ayutthaya, Thonburi and Bangkok) grew up in this basin or close to it. Whoever controlled the plain's rice and rivers controlled the kingdom.
This geography shaped a water-based civilisation. For centuries, life revolved around the rivers and the 'klong' (canals). People travelled by boat, traded at floating markets and built their houses on stilts to cope with the monsoon floods. Europeans nicknamed Ayutthaya the 'Venice of the East' because of its maze of canals. Bangkok inherited that amphibious character until the 20th century filled in many of its klong to build streets.
The central region is also the heart of Central Thai identity. Standard Thai is spoken here, the language taught in schools and used by the government, and political power spread out from here to the rest of the country. To travel across this plain is to travel along the backbone of the nation's history.
On the northern edge of the central plain, Sukhothai's historical park holds the ruins of the first kingdom that Thais recognise as their own, founded around 1238. Beyond its political role, Sukhothai is revered as the moment a truly Thai aesthetic was born. Its temples set a standard that still defines Thai art. Wat Mahathat has a great stupa shaped like a lotus bud, and Wat Si Chum shelters a colossal seated Buddha.
Sukhothai's most famous contribution is the 'walking Buddha'. Its flowing, sinuous lines and almost weightless serenity broke with the stiffness of earlier models and made it one of the high points of Buddhist sculpture anywhere. Alongside it came 'sangkhalok' ceramics, glazed in greens and greys. They were made in the nearby kilns of Si Satchanalai and exported all over Southeast Asia.
Sukhothai is also credited with creating the Thai alphabet, according to King Ramkhamhaeng's famous, and disputed, inscription of 1292. The debate over that stone is still open, but that takes nothing away from the place. Walking among its lotus ponds and monumental Buddhas at sunset is a glimpse into the symbolic origins of the nation.
Just over eighty kilometres from Bangkok, the island of Ayutthaya holds the ruins of one of the richest cities in the world between 1351 and 1767. At its height it had hundreds of temples, gold-covered palaces and whole quarters of Portuguese, Japanese, Persian, Dutch and French merchants. It was a capital open to the world: a Greek rose to become chief minister, and churches, mosques and Buddhist temples stood side by side.
What remains of that grandeur today is a field of ruins listed as a World Heritage Site. Several sights sum up the city's fate: the stupas of Wat Phra Si Sanphet, the outline of Wat Chaiwatthanaram on the riverbank and, above all, an image that has become iconic. At Wat Mahathat, a stone Buddha head sits caught in the roots of a tree. That head wrapped in a fig tree captures both sides of Ayutthaya: Buddhist devotion and the destruction of 1767.
These ruins are not just the work of time but the mark of a catastrophe. The Burmese army burned, looted and razed the city. The headless statues and scorched walls that tourists photograph today are direct witnesses to that end. For Thais, Ayutthaya is a place of memory as much as of beauty.
When Rama I founded Bangkok on the east bank of the Chao Phraya in 1782, he did not want just any city: he wanted to rebuild Ayutthaya. On the artificial island of Rattanakosin, ringed by canals, he built the Grand Palace and Wat Phra Kaew, the temple of the Emerald Buddha. This small figure carved from jade is the most sacred image in the country, and only the king may change its robes. Nearby stands Wat Pho, with its huge reclining Buddha covered in gold leaf, the birthplace of traditional Thai massage.
In the 19th century Bangkok was still a city of water, criss-crossed by klong that carried all of its trade. The floating markets that draw tourists today are a reminder of that amphibious life. Kings Mongkut and Chulalongkorn modernised the city with avenues, European-style palaces, trams and railways, and began turning the river village into a metropolis.
The 20th century finished the job. A flood of American dollars and soldiers during the Vietnam War, the economic boom and migration from the countryside turned Bangkok into a chaotic, vibrant megacity of more than ten million people. It has skyscrapers, legendary traffic jams and the best street food on the planet. It is the undisputed centre of Thailand: power, money and many of the country's political tensions are concentrated here.
West of the plain, towards the border with Burma, the province of Kanchanaburi holds one of the darkest chapters of the Second World War in Asia. During the Japanese occupation, between 1942 and 1943, the Imperial Army pushed through a railway of more than 400 kilometres to link Thailand with Burma and supply its fronts. It went down in history as the 'Death Railway'.
The railway was built amid hunger, disease and brutal punishment. Around 12,000 Allied prisoners of war died building it, among them British, Australian and Dutch soldiers. Far more numerous, and often forgotten, were the more than 80,000 Asian forced labourers ('rōmusha') brought in from across the region who also died. The most famous section is the bridge on the River Kwai. A novel and a film took liberties with the facts, but they fixed the place in the world's memory.
Today Kanchanaburi combines that painful memory with nature. The carefully kept war cemeteries and the railway museum welcome relatives and visitors from all over the world. Meanwhile, the waterfalls of Erawan National Park, the caves and the rivers make the province a nature destination. Tourism and mourning sit just a few kilometres apart here.
Northern Thailand was never part of Sukhothai or Ayutthaya. For centuries it was a separate kingdom, with its own history, language and culture. It was called Lanna, meaning 'a million rice fields', and was founded by King Mangrai. In 1262 he moved his capital to the newly built Chiang Rai, which he named after himself. In 1281 he conquered the Mon kingdom of Hariphunchai, centred on present-day Lamphun. In 1296 he founded Chiang Mai, the 'new city', which became the capital and heart of Lanna.
Mangrai was an extraordinary king, also remembered as a lawgiver and a shrewd ally. He made pacts with the neighbouring kingdoms of Phayao and Sukhothai instead of fighting them, which let him build a solid state in the mountains. Under his dynasty, Lanna became a major centre of Theravada Buddhism. Its monastic school held councils and produced religious texts that became references across the region.
Lanna developed a refined civilisation of its own, with its own art, its wooden temples with tiered roofs, its own script and its own traditions. Today the north feels different from the rest of Thailand: slower, with a different cuisine, accent and character. That is a direct legacy of those centuries of independence.
Founded by Mangrai in 1296, Chiang Mai was the capital of Lanna for centuries and is still the cultural capital of the north. Its old town keeps the original layout: a walled square ringed by a moat, with its gates and corner bastions still standing. Inside is an astonishing density of temples, such as Wat Phra Singh and Wat Chedi Luang, whose huge stupa was damaged by an earthquake in the 16th century. Many carry the unmistakable mark of the Lanna style, with carved wood and multi-tiered roofs.
Above the city, on the mountain, stands Wat Phra That Doi Suthep, one of the most revered shrines in the country. Legend says a white elephant chose its site. Chiang Mai was also a great centre of crafts such as silverwork, lacquerware, paper umbrellas and teak carving, which are still practised in its workshops and markets.
Today Chiang Mai blends that heritage with a busy contemporary life. It has night markets, universities, an international community of residents and a food scene built around northern dishes such as 'khao soi', a noodle curry made with coconut milk. It is the gateway to the mountains and the best place to understand what Lanna culture meant, and still means.
Lanna's independence did not last forever. In 1558 the Burmese king Bayinnaung took advantage of internal succession struggles to conquer Chiang Mai. When Mangrai's dynasty died out around 1578, the Burmese began appointing their own rulers. Lanna spent more than two centuries under Burmese rule, a period of decline, war and depopulation that left a deep mark on the north.
Liberation came with the reunification of Siam after the fall of Ayutthaya. In 1774-1775, Taksin's armies, allied with the local prince Kawila of Lampang, drove the Burmese out of Lanna's key territories. Kawila rebuilt Chiang Mai, which had been left almost empty. He repopulated the region through a harsh and sometimes forced policy of moving whole populations, known as 'putting vegetables into baskets, putting people into towns'.
In exchange for that protection, Lanna came under Bangkok's sway as a semi-autonomous tributary state, ruled by Kawila's dynasty. Only in the late 19th and early 20th centuries, with Chulalongkorn's centralising reforms, was the north fully absorbed into the Thai state, losing its autonomy. This happened so recently that the memory of a 'separate' north is still very much alive.
The northern mountains climb up to Doi Inthanon, Thailand's highest point at more than 2,500 metres. They are home to many highland peoples who are distinct from the Tai majority in the valleys. The Karen, Hmong, Akha, Lisu, Lahu and other groups arrived in several waves, many of them migrating from southern China, Burma or Laos over recent centuries. They keep their own languages, dress and beliefs.
For a long time their relationship with the Thai state was tense and marginal. They lived from subsistence farming and, in some areas, from opium. For decades many had no citizenship and no recognised land rights, which shut them out of basic rights. Royal crop-substitution programmes launched in the 1970s tried to replace the opium poppy with coffee, tea and highland fruit, with mixed results.
The north's human and natural landscape, with its misty valleys, terraced rice fields and mountain villages, made the region a destination for trekking and cultural tourism. Quiet towns like Pai, in a valley in Mae Hong Son province, became well-known backpacker havens thanks to their hot springs, waterfalls and laid-back atmosphere. That tourism brings income, but it also raises a challenge: keeping highland cultures from being reduced to a photo opportunity.
In the far north, where the Ruak and Mekong rivers mark the border between Thailand, Burma and Laos, lies the famous Golden Triangle. For much of the 20th century this region was one of the world's biggest centres of opium production, and later of heroin, controlled by warlords, militias and irregular armies. The name evokes both the beauty of the place and the shadow of the drug trade that made it famous.
From the 1980s and 1990s onwards, the Thai side of the Triangle changed its face. Development and crop-substitution programmes sharply cut opium growing in Thailand, which shifted to the Burmese side. Today the area lives from tourism, with viewpoints over the meeting of the rivers and museums that tell the story of opium, such as the House of Opium.
Its provincial capital, Chiang Rai, the city Mangrai founded in 1262, has become a striking art destination. On the outskirts stands the dazzling White Temple (Wat Rong Khun), a contemporary work by the artist Chalermchai Kositpipat made entirely of white stucco and mirrors. Nearby is the Blue Temple (Wat Rong Suea Ten), in an intense cobalt. These shrines are recent, not ancient, but they have become the new symbol of a province that went from opium to art.
The Andaman coast, the western shore of southern Thailand, is one of the most spectacular seascapes in the world. Sheer limestone towers covered in jungle rise abruptly from turquoise water, forming bays, islets and caves. These are karst formations. The limestone was laid down on the seabed hundreds of millions of years ago, then uplifted and worn by water and rain over thousands of years into these impossible shapes.
The best place to see them is Phang Nga Bay, a maze of rock pinnacles rising from the emerald sea. It has mangroves and floating villages of Muslim fishermen such as Koh Panyee. One of those islets, Ko Tapu, became world-famous as 'James Bond Island' after appearing in a 1974 film in the series. The cliffs of Railay, in Krabi, drop straight onto the sand and have turned the area into a rock-climbing mecca.
These same rocks hold the oldest human traces in the region: cave paintings thousands of years old have been found along the coast. The karst is not just a backdrop for tourists. It is a geological and archaeological archive, and the feature that defines the natural identity of the whole Andaman coast.
Long before it was the island of beaches, Phuket was the island of tin. Its deposits had been mined since Ayutthaya times, and they made it a magnet for trade. In the 19th century the tin rush drew thousands of Chinese immigrants, mostly Hokkien, who came to make up more than half of the island's population. That mix gave rise to a distinctive Peranakan or 'Baba' culture, a blend of Chinese, Malay and Thai.
The tin wealth left its most visible mark on the old town of Phuket Town. Mining barons and merchants built mansions and rows of Sino-Portuguese shophouses with arcades, shutters and pastel colours. That architectural heritage, now restored, bears witness to a time when the island lived from mining, not tourism.
When tin lost its value in the 20th century, Phuket turned its economy towards tourism. Its size helped (it is Thailand's largest island), as did its airport and its beaches. Patong became synonymous with nightlife, and the island became a base for trips all over the Andaman Sea. But beneath the beach umbrellas that other Phuket, mining and mixed, lives on, and you can explore it among the Chinese temples and colourful houses of the old town.
Before the miners, the resorts and the tourists, the Andaman Sea already had its people: the 'chao leh' or 'chao ley', literally 'sea people'. This group of peoples lived on the water for centuries. Among them are the Moken, the Urak Lawoi and the Moklen. Traditionally nomadic or semi-nomadic, they moved by boat from one archipelago to another, fishing, diving and gathering. They had a deep knowledge of the currents, the tides and the islands.
That knowledge of the sea came to light in 2004. Several Moken communities read the signs before the tsunami, such as the sudden retreat of the water and the behaviour of animals, and fled to higher ground. Almost all of them survived, a story that went around the world.
Today the chao leh face a difficult situation. Tourism has taken over many of the coasts and islands where they once moved freely, and their nomadic way of life clashes with borders, national parks and land ownership. Many have settled in island villages, caught between marginalisation and tourism, and are struggling to keep their language and traditions. They are the oldest memory of a sea now known mainly for its beaches.
On the morning of 26 December 2004, a magnitude 9.1 earthquake off the Indonesian island of Sumatra set off one of the deadliest tsunamis in history. About two hours later, the waves struck Thailand's Andaman coast. It was the country's worst natural disaster in modern times. Around 5,400 people died on Thai soil, roughly half of them foreign tourists, and thousands more were missing.
The hardest-hit province was Phang Nga, and within it the Khao Lak area, where most of the victims died: some 4,000 people. On the Phi Phi islands, the narrow isthmus joining the two halves of the island was flattened and about 70% of the buildings were destroyed, leaving hundreds dead or missing. Phuket was more sheltered and suffered less, though it also lost around 250 people. In total, the Indian Ocean tsunami killed about 228,000 people in fourteen countries.
The physical rebuilding was fast, and the resorts were back up within a few years, but the wound remained. Early-warning systems were installed, evacuation signs went up on the beaches and memorials were built. In Khao Lak, a police patrol boat that the waves carried two kilometres inland was kept as a monument. Every anniversary, coastal communities remember the victims of a morning that changed everything.
No image did more to drive tourism on this coast than a film. In 2000, 'The Beach', starring Leonardo DiCaprio, was shot at Maya Bay, a white-sand cove enclosed by cliffs in the Phi Phi Islands. The film turned the bay into a global icon and unleashed a flood of visitors that, over the years, ended up seriously damaging its corals. In 2018, the Thai authorities closed Maya Bay to the public to let it recover, and only reopened it, with strict restrictions, some time later. It became a symbol of the dilemma of mass tourism: the same fame that brings money can destroy the very thing people come to see.
This coast lives with that tension every day. Islands such as Koh Lanta offer a calmer pace and good dive sites; Krabi and its beaches at Railay and Ao Nang are the base for the Hong and Poda islands; and Phang Nga is home to the classic boat trip among its karsts.
Inland, the southern Andaman also holds a natural treasure: Khao Sok National Park, with one of the oldest rainforests on the planet —older than the Amazon—, Cheow Lan Lake with its floating bungalows on the water, and wildlife that includes elephants, gibbons and rare birds. Away from the bustle of the beaches, Khao Sok is a reminder that this south is also deep jungle and silence.
In the other south, the one facing the Gulf of Thailand, the islands have a very different history from the Andaman coast. For centuries, Koh Samui, Koh Phangan and Koh Tao formed a small, isolated archipelago, far from the routes of power and practically self-sufficient. They are thought to have been inhabited since ancient times, but their modern population took shape mainly with the arrival of Chinese traders and settlers, particularly from Hainan, who settled on Samui from the 19th century onwards.
That isolation was almost total until well into the 20th century. Koh Samui had no road around the island until the 1970s; until then, crossing it could take a whole day along jungle paths, and contact with the mainland was by boat, at the mercy of the monsoon. The islanders lived with their backs to the State, in simple Buddhist fishing and farming communities.
That remoteness, which for generations meant poverty and neglect, is now part of their appeal. When tourism arrived, first with adventurous backpackers and later on a mass scale, it found islands that until recently had been living in another time. Understanding that recent past of isolation helps explain the contrast, sometimes a stark one, between traditional life and the resorts that now share the gulf.
For more than a century, Koh Samui's economy revolved around a single product: the coconut. The island became covered in coconut palms, and its coconuts, shipped to Bangkok, were its main source of wealth. It is still nicknamed the 'coconut island', and one of its most curious sights is the traditional use of trained monkeys —macaques— taught to climb the palms and pick the fruit, a practice that has lasted for generations.
The shift towards tourism began in the seventies, when the first backpackers arrived, drawn by the unspoilt beaches of Chaweng and Lamai, and stayed in rustic huts for a few coins. The opening of the island's airport in 1989 —a private airport with tropical architecture— sped everything up: Samui went from alternative hideaway to a destination of resorts and luxury hotels in barely two decades.
Today Koh Samui is the most developed island in the gulf, with its golden Big Buddha, its temples, its nightlife and its own airport. The transformation came at a cost —intense urbanisation, pressure on water and the environment—, but beneath the tourist layer the coconut groves, the fishing villages and an island identity that long predates the arrival of the first tourist still survive.
The smallest of the three main islands, Koh Tao —'turtle island', for its shape and for the turtles that used to nest on its beaches— has a surprising past. Between the thirties and forties it served as a penal colony: political and common prisoners were sent there from the prison on Tarutao Island. Isolated, with scarce supplies and surrounded by dangerous waters, the inmates struggled to survive. In 1947, after a royal amnesty, they were all returned to the mainland and the island was left almost uninhabited again.
For decades, Koh Tao was little more than a handful of fishing and coconut-farming families. Its revival came from beneath the water: from the eighties and nineties onwards, divers discovered that its warm, shallow, clear waters were ideal for learning to scuba dive. The island specialised completely.
Today Koh Tao is one of the places in the world where the most people earn their diving certification, with dozens of schools and low prices that attract travellers from all over the planet. It is an extreme case of reinvention: from forgotten penal colony to an economy entirely devoted to showing off the gulf's underwater world. That success also brought tourist pressure and episodes that damaged its image, but they did not change its status as the capital of Thai diving.
Between Samui and Koh Tao lies Koh Phangan, an island wilder and less built-up than its neighbour, with hidden coves and jungle-covered mountains. But its worldwide fame comes not from its nature but from a party: the Full Moon Party, the night-time celebration held on Haad Rin beach at every full moon, which draws thousands of people.
Its origins are modest and somewhat mythical. The most widespread version places the first party around 1985, at a group of bungalows in Haad Rin; other versions date it to 1983, as an improvised thank-you to a handful of travellers. What is certain is that, in the late eighties, small groups of backpackers began gathering on the beach on full-moon nights, and word of mouth among travellers across Southeast Asia gradually turned those informal get-togethers into a recurring night-time tradition.
Over time, the Full Moon Party became a mass phenomenon and a central part of the island's economy, with lights, music and international crowds. It also brought problems —safety, drugs, rubbish, tension with the local community—, and many travellers now look for the other Koh Phangan: the quiet north, the jungle beaches and a scene of yoga and wellness retreats. The island lives with that dual identity: the most famous party in Southeast Asia and, a few kilometres away, the calm that made it attractive in the first place.
The gulf islands share a trait that sets them apart from the Andaman coast: their calendar. The monsoon works the other way round on the two southern coasts, so when the Andaman gets rain and heavy swell, the gulf tends to be calmer, and vice versa. One coast's best season is the other's worst, something that has always shaped the lives of fishermen and farmers and that today also organises the tourist seasons.
Unlike the far south of the peninsula, which is mostly Malay and Muslim, these islands and their mainland province, Surat Thani, are mostly Buddhist and of Tai culture, with large temples and a strong religious tradition. On the mainland, the town of Chaiya preserves traces of the kingdom of Srivijaya, the great Malay-Buddhist thalassocracy that dominated maritime trade in Southeast Asia between the 7th and 13th centuries, a reminder that these waters were trade routes long before they were beach destinations.
Off the islands also lies Ang Thong National Marine Park, an archipelago of more than forty limestone islets, hidden lagoons and protected waters that partly inspired the novel on which the film 'The Beach' was based. Between the monsoon, the temples and the marine parks, the gulf offers a side of southern Thailand different from the Andaman: just as beautiful, but with its own rhythm and its own history.
Hardly anything that happened to Thailand happened on its own: these are the histories next door.
