20 fascinating facts about Machu Picchu
Everyone has seen the photo — but Machu Picchu is far stranger and more brilliant than the postcard suggests. Here are the facts our guides love to share, from earthquake-proof engineering to the peak that hid it from the world for centuries.
Part of our complete guideThe complete Machu Picchu guide →History and discovery
- It was built around 1450, at the height of the Inca Empire, likely as a royal estate for the emperor Pachacuti.
- The Spanish never found it — which is why it survived so intact.
- It was brought to world attention in 1911 by Hiram Bingham, though local families already farmed there.
- It is a UNESCO World Heritage Site and one of the New Seven Wonders of the World.
Engineering and astronomy
- The Incas built without iron tools, the wheel or mortar — stones are cut so precisely a knife blade will not fit between them.
- The architecture is earthquake-resistant: stones are shaped to shift and resettle during tremors.
- Up to 60% of the construction is underground — deep foundations and drainage that keep it standing on a steep, wet ridge.
- The Intihuatana stone aligns with the sun at the solstices, part of the Incas’ sophisticated astronomy.
See it with your own eyes
Facts are one thing; standing among the terraces is another. Visit on a guided day tour, walk in via the Inca Trail, and read how the tickets and circuits work first.
Stand where the Incas stood
Check live availability for Machu Picchu and the Inca Trail.
Frequently asked questions
It was built around 1450 CE, during the reign of the Inca emperor Pachacuti, making it roughly 570 years old.
Its remote position high on a hidden ridge kept it off the conquistadors’ routes, so it was never looted or destroyed like many other Inca sites.
Through extraordinary stonemasonry — cutting and fitting stones so precisely that no mortar was needed — and deep underground foundations for stability and drainage.