Photograph of Machu Picchu taken in 1912 by Hiram Bingham during the Yale Peruvian Expedition. The site, an important Inca citadel in the Andes of Peru, had been visited earlier by local people such as Agustín Lizárraga in 1902, and was later brought to international attention through Bingham’s expeditions of 1911 and 1912. Today marks the anniversary of Bingham’s 1911 visit, which contributed to its worldwide recognition.