Machu Picchu, sometimes called the Lost City of the Inca, was hidden from history for hundreds of years until its rediscovery in 1911. Built onto a mountainside with impressive and sophisticated engineering, it gives archaeologists a look into the everyday life of the Inca people. Today, it stands as the best surviving example of Inca architecture, and has been designated a World Heritage Site and one of the New 7 Wonders of the World.