Kaunas is the city that became a capital without meaning to, and that accident of history turned it into a treasure. When Vilnius fell into Polish hands in 1920, Kaunas took on the role of Lithuania's provisional capital, and over two decades it transformed at top speed from a provincial town into a modern European capital. The result is unique: hundreds of interwar modernist buildings —banks, churches, homes, cafés— built between 1919 and 1939, an ensemble UNESCO inscribed as a World Heritage Site in 2023 under the name 'Modernist Kaunas: Architecture of Optimism'.
But Kaunas is much more than its modernism. It has one of the prettiest medieval old towns in the country, with its red-brick Gothic castle at the confluence of the Nemunas and the Neris, Town Hall Square (its town hall nicknamed 'the white swan') and lively cobbled streets. It's crossed by Laisvės alėja, one of the longest pedestrian avenues in Europe, and crowned by two 1930s funiculars and the imposing white Basilica of the Resurrection. It's a young, creative university city, with one of the best street-art and café scenes in the Baltics.
This guide covers Kaunas from a practical angle: how to get there by train from Vilnius in just over an hour, what to see in the old town and on the UNESCO modernism route, how to ride the historic funiculars and why it's worth setting aside time for the Ninth Fort, the deeply moving Holocaust memorial on the outskirts. It's an ideal destination for one or two days that surprises almost everyone: behind its 'second city' reputation lies a very strong personality and one of the most intense 20th-century stories in Lithuania.
Founded around its castle, mentioned as early as the 14th century as a bulwark against the Teutonic Order, Kaunas grew as a trading town at the confluence of the Nemunas and the Neris and joined the Hanseatic League. Under the Russian Empire it was a major military stronghold (Kaunas Fortress, with its numbered forts). Its great moment came after the First World War: with Vilnius in Polish hands, Kaunas was Lithuania's provisional capital between 1920 and 1939 and experienced a burst of modernity and modernist architecture. The Second World War brought horror: tens of thousands of Jews were murdered in the Kaunas ghetto and at the Ninth Fort. After the Soviet era and independence in 1990, Kaunas reinvented itself as a cultural capital; in 2022 it was European Capital of Culture and in 2023 its interwar architecture was declared a World Heritage Site. The full story is on our history page.
Read the full history ↓The geographic centre and Upper Lithuania (Aukštaitija): Kaunas, the sturdy interwar provisional capital now celebrated for its modernist architecture, and the lakes and forests of the country's oldest national park.
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Origins, formation and what the sources say.
Kaunas was born of water and war. At the exact spot where the Neris river pours into the Nemunas, Lithuania's great river, a stone castle was built as early as the 13th or 14th century: the first in the whole country. That was no accident. The confluence was a strategic position of the first order, a crossroads of waterways and trade routes, and also a dangerous frontier. To the west pressed the Teutonic Order, the crusader knights who for almost two centuries harassed Lithuania, the last great pagan state in Europe.
Kaunas Castle was besieged, taken and rebuilt again and again. In 1362, after a long siege, the crusaders razed it. The Lithuanians built it up again, stronger, with double walls and a moat. Its story in stone sums up the country's story in those centuries: resistance against the Baltic Crusade, which only ended after the joint victory of Poles and Lithuanians at the Battle of Grunwald (Žalgiris) in 1410. With the Teutonic threat gone, Kaunas could turn to what its geography offered: trade.
And so the city grew into a busy river port. Merchants from the region and from abroad settled here, and in the 15th century Kaunas even had an office of the Hanseatic League, the great trading network of northern Europe. Timber, wax, honey, furs and grain passed through its wharves. Today's Old Town, with its Town Hall Square and merchants' houses, keeps the memory of that mercantile, Hanseatic Kaunas, a thriving crossroads between the Baltic world and the rest of the continent.
After the Polish-Lithuanian Commonwealth disappeared in the partitions of the late 18th century, Kaunas became part of the Russian Empire. Its position near the border with German Prussia made it strategic once more, this time for the Tsar. From 1882 the Russian Empire turned Kaunas into a gigantic military fortress: a ring of forts, batteries and trenches surrounding the city, designed to stop any German advance from the west. Several numbered forts were built, among them the Ninth Fort, which decades later would play a deeply tragic role.
The Kaunas of that era was a garrison town, with thousands of soldiers, military engineers and a civilian population that grew in their shadow. The fortress, however, did not live up to expectations. During the First World War, in 1915, the German army took it in just a few days, in one of the Russian army's most humiliating defeats. The city stayed under German occupation until the end of the war.
That same context of the Russian Empire's collapse, German occupation and post-war chaos also opened, unexpectedly, Kaunas's great historical opportunity. In February 1918 Lithuania declared independence. But the young state was born in a dispute over its historic capital, Vilnius, which was also claimed by Poland and by the emerging Soviet Russia. When Polish troops took Vilnius in 1920, Lithuania lost its capital, and all eyes turned to the country's second city: Kaunas.
Between 1920 and 1939, Kaunas was Lithuania's temporary capital. The word 'temporary' mattered: the country never gave up on Vilnius, and Kaunas took on the role knowing it was a stopgap. Yet that temporary status gave rise to one of the most brilliant periods in Lithuanian history. A provincial town with hardly any public buildings fit for a capital had to equip itself within a few years with ministries, banks, universities, theatres, churches and modern housing. And it did so with extraordinary drive.
In less than two decades, thousands of buildings went up in a new, modern style that blended art deco, functionalism, neoclassicism and Lithuanian national motifs. Architects such as Vytautas Landsbergis-Žemkalnis, Karolis Reisonas and Feliksas Vizbaras designed an optimistic, bright city that looked to the future: the Bank of Lithuania, the Chamber of Commerce, the Central Post Office, the Pienocentras building, the Officers' Club, Vytautas Magnus University and the huge white Basilica of the Resurrection on Žaliakalnis hill. Services were modernised, the funiculars were built (1931 and 1935) and the city filled up with cafés and a vibrant cultural life.
Interwar Kaunas was a laboratory of Baltic modernity, proud and European. Its architectural ensemble is so distinctive and so well preserved that in September 2023 UNESCO added it to the World Heritage List under the name 'Modernist Kaunas: Architecture of Optimism, 1919-1939'. That name sums up the spirit of an era: a young country that, against all odds, built its capital and its future with faith in tomorrow. A future the war was about to shatter.
The Second World War struck Kaunas with extreme violence. After the pact between Nazi Germany and the Soviet Union, Lithuania was occupied by the Soviets in 1940, with deportations and repression. In June 1941 Nazi Germany invaded the country, and one of the most atrocious chapters in its history began. Kaunas had a large Jewish community with a rich cultural life. The Nazis, with the help of local auxiliaries, confined it to a ghetto in the Vilijampolė (Slobodka) district and unleashed the extermination.
The Ninth Fort, that old fort of the Russian fortress on the outskirts of the city, became one of the main killing sites. Tens of thousands of people were shot there: Jews from the Kaunas ghetto and also Jews deported from Germany, Austria, France and other countries, brought to Lithuania to be murdered. One of the most terrible episodes was the so-called 'Great Action' of 29 October 1941, when around 9,000 people were murdered in a single day. It is estimated that some 45,000-50,000 people died at the Ninth Fort.
The Jewish community of Kaunas, like that of almost all of Lithuania, was virtually wiped out. There were acts of humanity: the Japanese diplomat Chiune Sugihara, consul in Kaunas, disobeyed orders and signed thousands of visas that saved the lives of many Jews. But the scale of the tragedy was immense. Today the Ninth Fort is a memorial and genocide museum, dominated by a huge concrete monument, which preserves the memory of the victims with restraint and rigour. It is a hard visit, but a necessary one to understand what happened here.
After the war, Lithuania came under Soviet control again and stayed there until 1990. Kaunas, which had been the symbol of independent, modern interwar Lithuania, felt Sovietisation especially harshly. It was in Kaunas, in fact, that national feeling stayed most alive and defiant. The best-known episode came in May 1972, when the young Romas Kalanta set himself on fire in the public garden next to Laisvės alėja in protest against the Soviet regime. His death sparked riots and youth protests that the authorities put down, and it turned him into a symbol of Lithuanian resistance.
With independence restored in 1990, Kaunas, now the second city of a Lithuania whose capital was once again Vilnius, had to reinvent itself. It left behind declining Soviet industry and bet on culture, its university and its extraordinary architectural heritage. The city, very young and with a strong student life, developed a creative scene of street art, cafés and festivals that put it on Europe's cultural map.
That revival reached two decisive milestones in a row. In 2022 Kaunas was European Capital of Culture, with an ambitious programme that championed its modernism and its history and showcased the city to the continent. The following year, in 2023, came the crowning moment: UNESCO declared its interwar architecture a World Heritage Site. In barely a century, Kaunas had gone from improvised temporary capital to the scene of one of the 20th century's greatest tragedies, and from there to a cultural capital recognised worldwide. Walking around it today means reading the whole history of modern Lithuania in its streets, castle, funiculars and white buildings.
