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Sacsayhuaman, Peru
A walled complex on the northern outskirts of the city of Cusco, Peru, the former capital of the Inca Empire. Like many Inca constructions, the complex is made of large polished dry stone walls, with boulders carefully cut to fit together tightly without mortar. The site, at an altitude of 3,701 meters, was added as part of the city of Cusco to the UNESCO World Heritage List in 1983.
