🇦🇷 Argentina · Cuyo
Aconcagua is the roof of the Americas: at some 6,961 meters, it is the highest mountain on the continent and in the entire Western and Southern Hemispheres, the high point of the Andes. It rises in western Mendoza province, inside Aconcagua Provincial Park, on the legendary National Route 7 that crosses into Chile, and it is one of the great objectives of world mountaineering.
But Aconcagua is not just for climbers. The park has something for every level: from the easy walk to the viewpoint and Laguna de Horcones — doable on a full-day trip from Mendoza, with no mountaineering required — to multi-day treks up to the Confluencia and Plaza de Mulas camps, and the big summit expedition, reserved for those with experience, preparation and a permit.
Its appeal blends overwhelming nature with an epic mountaineering story: the first recorded ascent, in 1897, was a solo feat by the Swiss guide Matthias Zurbriggen. Ever since, thousands of climbers from around the world have come every summer to take on the giant. To climb it — or simply to get close and look up at it — is to feel the sheer scale of the Andes. Access requires official permits from Mendoza province and, for the summit, mandatory specialist insurance.
Aconcagua, the highest peak in the Americas (~6,961 m), stood for millennia as an untouched giant of the high Andes. Its first recorded ascent came on January 14, 1897, when the Swiss guide Matthias Zurbriggen, part of the expedition led by the English explorer Edward FitzGerald, reached the top alone by what is today the normal route. From then on the mountain became one of the great objectives of world mountaineering. In the 20th century, Mendoza province created Aconcagua Provincial Park to protect the area and regulate access, with a system of permits, medical checks and camps. The full story, including the theories about its exact height, is on our history page.
Read the full history ↓The land of sun and good wine: a Huarpe oasis at the foot of Aconcagua, cradle of San Martín's Army of the Andes, rebuilt after the 1861 earthquake and turned into the world capital of Malbec and the high mountains.
Read the history of Mendoza →No exact prices: a scale from $ (budget) to $$$$$ (luxury), with 2-3 options per category.
Origins, formation and what the sources say.
There's a question that comes up every summer in Aconcagua's high camps: why does a mountain that demands no ice climbing and no vertical rock kill, on average, more than one climber a season? The answer lies in the sheer scale of the giant: almost seven thousand meters of stone and wind, where the human body stops working the way it does at sea level. This is no tour-guide exaggeration: Aconcagua is, quite simply, the highest mountain in the Americas, the highest in the entire Western Hemisphere and the Southern Hemisphere, and one of the celebrated 'Seven Summits' that brings together the highest peak on each continent, rubbing shoulders with Everest, Denali and Kilimanjaro in every climber's imagination.
Aconcagua rises in western Mendoza province, a few meters from the Chilean border, inside a provincial park of more than 65,000 hectares whose altitudes run from the 2,800 meters of the Horcones entrance up to the summit, at some 6,961 meters. It is the high point of the entire Andes range, the longest mountain chain on the planet, and its mass is so enormous that it generates a microclimate of its own: winds topping 200 km/h in the summit zone, snowstorms that appear in minutes out of a clear sky, and the phenomenon climbers dread and call the 'white wind'.
The origin of the name 'Aconcagua' remains, at this point, almost as much of a puzzle as the mountain itself. The most widely repeated hypotheses tie it to indigenous languages: some derive it from the Quechua 'Ackon Cahuak' ('stone sentinel'), others from Aymara or from words of the Huarpe people, the ancient inhabitants of the Cuyo region, with meanings that range from 'great watchtower mountain' to other variants built around the idea of a stone guardian over the valley. There is no single explanation accepted by linguists, and that mystery feeds much of the mythical aura that has surrounded the giant for centuries, long before any European set foot on its slopes.
For millennia, Aconcagua was an untouched giant, watched from a distance by the indigenous peoples of Cuyo and, centuries later, by the travelers crossing the cordillera. As early as 1818 the area had taken on enormous historical weight: it was the corridor through which General José de San Martín sent part of his Army of the Andes towards Chile, in the liberation campaign that would redraw the political map of South America. But Aconcagua's summit itself remained untouched, a challenge nobody had even seriously attempted.
The conquest of the summit came only at the end of the 19th century, when high mountains were still almost unknown territory for science and sport. The German scientist Paul Güssfeldt had tried to reach the top from the Chilean side in 1883, getting past 6,500 meters before giving in to the weather, convinced that approach was shorter. His attempt, though it failed, served as both precedent and warning about how hard the mountain really is.
It was a scientific and sporting expedition led by the British explorer Edward FitzGerald that finally achieved the first recorded ascent. FitzGerald sailed from Southampton on October 15, 1896 aboard the steamer Thames, bound for Buenos Aires, with all his equipment, a group of guides — mostly Swiss — and the surveyor Stuart Vines as his principal assistant. Once in Mendoza, the expedition set up a base camp at about 4,250 meters in the Horcones valley and, over almost six weeks, made up to five summit attempts. FitzGerald himself joined several of them, but nausea and exhaustion always beat him near 6,000 meters, a ceiling that the lack of oxygen made nearly impassable for much of the party.
On January 14, 1897, the Swiss guide Matthias Zurbriggen — hired as the expedition's most experienced mountaineer — reached the summit of Aconcagua entirely alone, becoming the first person on record to stand on it, by the route known today as the normal route. A month later, on February 13, 1897, a second rope team made up of Stuart Vines himself and the Italian guide Nicola Lanti repeated the feat; months after that, in April, Vines and Zurbriggen shared another summit together, closing an extraordinary season for the time. That is how the giant's mountaineering legend was born, just a few years before the new century turned Aconcagua into one of the great objectives of world mountaineering.
The route opened by Zurbriggen became the 'normal route', the classic path most climbers follow to attempt the summit, and despite its name it runs up the mountain's northwest side. It isn't a technical climb — it demands no great rock or ice skills — but the extreme altitude, the cold, the wind and the famous 'white wind' make it a very demanding undertaking, where the real enemy is the lack of oxygen and altitude sickness, capable of felling trained climbers who underestimate acclimatization.
The landmarks of the normal route are part of the mountain's lore: the Plaza de Mulas base camp (around 4,300 m), one of the largest high-altitude camps in the world, where in peak season hundreds of tents from expeditions on every continent sit side by side; then Plaza Canadá (~5,050 m), the Piedra de 5.000, Nido de Cóndores (~5,250 m), a broad rock shelf with one of the widest views in the whole cordillera; higher up, Berlín (~5,800 m), with its historic mountain refuges, today partly replaced by more modern structures; and after that Piedras Blancas, Piedras Negras and Independencia, the landmark that echoes the national holiday and that for decades was the last refuge before the final stretch. The hardest part comes with the Portezuelo de los Vientos, the Gran Travesía and La Canaleta, a steep gully of loose rock that wears down even the fittest climbers, before it opens onto the summit.
Each of those names is a station on the slow acclimatization march that can take two weeks or more: climb, sleep high, come down to recover oxygen and go back up, the cycle the body needs in order to build extra red blood cells and tolerate the thin air. From Zurbriggen's feat to today, thousands of expeditions have repeated that itinerary, and over the years variants were added, such as the Polish Glacier route (from the east) or the demanding 360° circuit, which goes right around the mountain via the Vacas valley before joining the normal route for the final climb. But Zurbriggen's route is still, almost a hundred and thirty years later, the path chosen by the vast majority of those who dream of standing on the roof of the Americas.
As the 20th century wore on and international mountaineering grew explosively, Mendoza province took a decisive step: in 1983, through Provincial Decree-Law No. 4807, Aconcagua Provincial Park was formally created, covering some 71,000 hectares in the Las Heras department, about 190 kilometers from the city of Mendoza. The aim was twofold: to protect a fragile high-mountain ecosystem — home to species such as the guanaco, the Andean condor and plant life adapted to extreme conditions — and, at the same time, to bring order to the swelling flood of expeditions arriving from all over the world, drawn by the mountain's fame.
Since then the park has had a permanent ranger corps, in charge of monitoring, patrolling and — when necessary — stopping anyone who tries to skip the safety rules, including through steep fines. A system of official permits was set up, differentiated by type of activity (day trek, short trek, long trek and climb), along with mandatory medical checks at the entrance posts and at the high camps, an authorized summer season (generally November to April) and a requirement for specialist evacuation and medical assistance insurance for anyone going beyond the short trek. These rules, reviewed and updated every year, aim to cut down accidents on a mountain where the weather changes in minutes and where, despite every advance, each season brings rescues and, sadly, deaths as well.
Today, every summer, thousands of climbers from around the world come to Aconcagua to take on the giant — the great majority guided by licensed expedition companies that know the terrain, the weather and the safety protocols — while many other visitors, with no mountain experience at all, come simply to look at it from the Horcones viewpoint, on a full-day trip from Mendoza that asks for nothing more than the willingness to walk a couple of hours at nearly 3,000 meters. The mountain nobody had set foot on for millennia, and which only in 1897 gave up its summit to the stubbornness of a Swiss guide, has become one of the great destinations of world mountaineering: a symbol of the Andes, a source of pride for Mendoza and, still today, an enormous challenge that demands the same respect Zurbriggen and his companions gave it more than a century ago.