Machu Picchu rises high in the Peruvian Andes, where stone ruins sit between steep peaks and thick mist, giving the place a strange and almost unreal feeling.
It was built by the Inca in the 15th century and later remained hidden from the outside world until Hiram Bingham was led there in 1911.
Because the site was never found by the Spanish and stayed preserved for so long, it has become surrounded by mystery and speculation.
Its temples, terraces, and careful stonework still make people wonder how such a complex city was built in such a remote place.
Even today, Machu Picchu feels less like a ruin and more like a place that was meant to keep its secrets.