1911 – Hiram Bingham III re-discovers Machu Picchu, "the Lost City of the Incas." was an American academic, explorer and politician. In 1911, he publicized the existence of the Inca citadel of Machu Picchu which he rediscovered with the guidance of local indigenous farmers. Later, Bingham served as the 69th governor of Connecticut for a single day in 1925—the shortest term in history. He had been elected in 1924 as governor, but was also elected to the Senate and chose that position. He served as a member of the United States Senate until 1933. Machu Picchu is a 15th-century Inca citadel located in the Eastern Cordillera of southern Peru on a mountain ridge at 7,970 feet. It is situated in the Machupicchu District of Urubamba Province about 50 miles northwest of Cusco, above the Sacred Valley and along the Urubamba River, which forms a deep canyon with a subtropical mountain climate. Often referred to as the "Lost City of the Incas", Machu Picchu is one of the most iconic symbols of the Inca civilization and a major archaeological site in the Americas. Estimated to be built around 1450, it is believed to have served as an estate for the Inca emperor Pachacuti, though no contemporary written records exist to confirm this. The site was abandoned roughly a century later, likely during the Spanish conquest. Modern radiocarbon dating places its occupation between c. 1420 and 1530. Machu Picchu was constructed in the classical Inca style, featuring finely crafted dry-stone walls. Designated a National Historic Sanctuary by Peru in 1981 and a UNESCO World Heritage Site in 1983, Machu Picchu was also named one of the New Seven Wonders of the World in 2007. As of 2025, the site receives over 1.5 million visitors annually, making it Peru's most visited international tourist destination.