The April 1913 issue of National Geographic magazine was devoted to Machu Picchu and the National Geographic Society and Yale University-sponsored expedition of the Inca site which took place the previous year. American academic Hiram Bingham, III claimed to have “discovered” the centuries-old site on this date (July 24) in 1911. Machu Picchu is believed to have been built during the rule of Inca emperor Pachacuti in the mid-15th century, and was abandoned a century later. The archaeological artifacts collected during Bingham’s various expeditions were finally returned to Peru by Yale University in late 2012.
(Source: National Geographic)