Largest Inca discovery

The two Yale University Peruvian Expeditions of 1911–12 and 1914–15, both led by US historian Hiram Bingham, resulted in the discovery of the lost Inca cities of Machu Picchu and Vitcos – two of the most important archaeological finds in the Americas. Bingham believed that he had found Vilcabamba, the final refuge of Manco Inca, but this is now disputed, as other ruins seem to have a better claim to the title. The Spanish conquistadors, the conquerors of the Incas, made no mention of Machu Picchu in the chronicles of their conquests. It is believed that they had failed to uncover the ancient city.