The ancient structure located in Machu Picchu is a 15th-century Incan citadel. Nestled in the Andes Mountains of Peru, this remarkable archaeological site was built under the reign of the Inca emperor Pachacuti. Machu Picchu features sophisticated dry-stone construction and is famous for its terraced agriculture and religious significance, believed to be a royal estate or a religious retreat. Rediscovered in 1911 by Hiram Bingham, it has since become a UNESCO World Heritage Site and one of the most significant cultural landmarks in South America, drawing millions of tourists annually.