The civilization that built Machu Picchu in Peru was the Inca Empire. This remarkable site, often referred to as the "Lost City of the Incas," was constructed in the 15th century during the reign of Emperor Pachacuti. Located high in the Andes Mountains, Machu Picchu exemplifies Inca engineering and agricultural ingenuity, featuring terraced fields and intricate stonework. The site served various purposes, believed to be a royal retreat as well as a religious center. Rediscovered in 1911 by Hiram Bingham, Machu Picchu is now a UNESCO World Heritage Site and attracts countless visitors eager to explore its stunning ruins and rich history.