The short answer
Machu Picchu was brought to the world's attention on 24 July 1911 by an expedition led by Hiram Bingham, a Yale lecturer who was looking for the last refuge of the Inca. He was guided up the ridge by local people, and farming families were already living on the old terraces. So the honest version of the story is not that a lost city was discovered in the jungle, but that a site known to its neighbours was documented and published for the outside world, and became famous almost overnight.
That distinction matters when you visit. It changes what you look for, who you credit, and how you behave on a site that is both a world-famous monument and part of a living landscape.
What was here before 1911
Machu Picchu, which in Quechua means roughly "old peak", was built in the middle of the 15th century. Most researchers link it to the Inca ruler Pachacuti and think of it as a royal estate rather than a city: a place for ceremony, retreat and the management of the surrounding valley. It sits on a saddle between two peaks high above the Urubamba River, with terraces for farming and stone buildings fitted together with great precision.
The site was left around the time of the Spanish conquest in the 16th century. It does not appear to have been found or destroyed by the Spanish, which is one reason so much of it survived. After that it was never forgotten locally. Farmers in the valley knew the ruins and the terraces, and some used the cleared ground for crops.
The 1911 expedition
Bingham travelled to Peru in 1911 with a small team from Yale, hoping to find Vilcabamba, the remote stronghold where the last Inca rulers held out against the Spanish. Following the Urubamba valley, he asked local people about ruins. A muleteer from the valley, Melchor Arteaga, led him to the ridge, and farmers living on the slope pointed him up to the terraces. What he found, overgrown but largely intact, convinced him he had reached something remarkable.
He returned with larger expeditions in 1912 and 1914–15 to clear vegetation, survey the buildings and excavate. His photographs and the 1913 National Geographic coverage of the work made Machu Picchu an international name. Others had reached the site earlier: a local farmer is reported to have left a dated inscription there in 1902, and Bingham himself recorded that families were already farming there. Bingham's role was to document and publicise it, not to be the first person to see it.
His belief that the place was Vilcabamba did not hold up. Later work placed that last Inca refuge at a different, more remote site, and Machu Picchu is now understood as an estate of the Inca elite. Like Petra, which became known to Europeans through a famous 1812 visit by a Swiss traveller, its story is one of local knowledge meeting outside attention.
What happened to the finds
The expeditions took pottery, tools, human remains and other objects to Yale for study. Peru later asked for them back, and after years of dispute Yale and the Peruvian government reached an agreement in 2010 for their return. Return shipments continued in the following years, and many pieces are now shown in Cusco. If you are interested in the objects rather than just the ruins, ask at the official site channels what is on display and where. The Yale Peabody Museum still holds part of the expedition archive and its collection pages are listed above.
This history is a useful reminder that the site belongs first to Peru and to the communities of the Cusco region, and that research on it is ongoing. The dating of the site has moved too: a 2021 radiocarbon study of remains from Machu Picchu suggested that it was in use from about 1420, a few decades earlier than the date long taught.
How the story helps you plan your visit
- Look for the layout, not just the postcard view. Spend time at the agricultural terraces, the Temple of the Sun and the stone workings that show how the Inca managed water and slope. Those are the features that made the site stand out to the 1911 team.
- Add the museum stops. The site museum below the ruins and the museums in Cusco give the objects and the context that the ruins alone cannot. Confirm opening days on the official site before you build your day around them.
- Take the road and the footpaths with the history in mind. The zigzag bus road from the valley floor is named after Bingham, and the old Inca paths, such as the classic trail, approach the citadel as its builders did. Permits and timed entry are controlled officially, so read the current rules on the official site before you plan.
- Allow time for altitude. Most trips pass through Cusco at well over 3,000 m. Our Machu Picchu travel guide covers the route, the circuits and the acclimatisation advice in detail.
The best time to visit
Bingham arrived in the dry season, and the same months are still the most popular: roughly May to September, with June to August the busiest. The shoulder months of April–May and September–October often balance better weather against fewer people. The rainy season, from around November to March, brings cloud and mud but quieter paths and green terraces. The classic Inca Trail normally closes for maintenance in February. Use our best time to visit planner to compare it against your other stops, and check the official site for the dates that apply to your trip.
If you are travelling from India
There is no direct route, so most travellers connect through a hub in the Gulf, Europe or the Americas, then fly to Lima and on to Cusco. Allow for long journey times and build in a rest day for altitude and jet lag before any hike. For entry rules, check the Peruvian immigration authority linked on this page and your own government's travel advice for the dates you travel, rather than relying on any blog, including this one.
Practical tips
- Follow the site rules. Stay on marked paths, do not climb on walls, and keep to the direction of the circuit you are allocated.
- Pack for four seasons in a day. Rain cover, layers, sun protection and sturdy shoes. Build a checklist with our packing list builder.
- Use a licensed guide. A good one will tell you which parts of the story are firm, which are debated and which come from newer research.
- Do not rely on one date for everything. Opening hours, circuits and quotas change, so confirm them on the official site close to your travel date.
Responsible travel
Machu Picchu receives a very large number of visitors for a small, fragile site. Carry your litter out, keep your voice down, do not touch carved stones, and treat the people who live and work in the valley as hosts and not as scenery. For general advice on visiting any heritage site well, see our guide to World Heritage site visits and the UNESCO listing for background on why the site is protected.
Official sources
- Machu Picchu official site (Ministry of Culture of Peru)
- UNESCO World Heritage listing for Machu Picchu
- Yale Peabody Museum (holds part of the 1911-1915 expedition collection)
- Peru immigration authority (entry rules for visitors)
Frequently asked questions
Who discovered Machu Picchu?
The American academic Hiram Bingham led the 1911 expedition that brought the site to world attention, on 24 July 1911. He was guided there by local people, and farming families were already living and growing crops on the terraces, so 'rediscovered for the outside world' is a fairer description than 'discovered'.
Did anyone know about Machu Picchu before 1911?
Yes. Quechua-speaking farmers in the valley knew the ruins and used the terraces, and other visitors are reported to have reached the site before Bingham, including a local farmer who left a dated inscription in 1902. What Bingham's expedition did was document it and publish it internationally.
Why was Machu Picchu abandoned?
It was most likely a royal estate of the Inca ruler Pachacuti, and it appears to have been left around the time of the Spanish conquest in the 16th century, when the Inca state collapsed. The reasons are not recorded in detail, and researchers continue to study the question.
Was Machu Picchu the lost city of Vilcabamba?
Bingham believed it might be, but most researchers now place Vilcabamba, the last Inca refuge, at a different site deeper in the forest. Machu Picchu is better understood as an estate of the Inca elite.
Is Machu Picchu still being researched?
Yes. Archaeologists keep refining its dates and uses. A 2021 radiocarbon study of remains from the site suggested occupation from around 1420, somewhat earlier than the date traditionally given.