Tourists at the Incan archaelogical site of Saqsaywaman, Cusco, Peru - stock photo

Cusco, Peru - June 19, 2016: Saqsaywaman (Saksaywaman, Sasawaman, Saksawaman, Sacsahuayman, Sasaywaman or Saksaq Waman (Quechua language) (hispanicized spellings Sacsayhuaman, Sacsayhuaman, Sacsahuaman, Saxahuaman and others)) is a citadel like structure on the northern outskirts of the city of Cusco, Peru, the historic capital of the Inca Empire. Sections were first built by the Killke culture about 1100; they had occupied the area since 900. The complex was expanded and added to by the Inca from the 13th century; they built dry stone walls constructed of huge stones. The workers carefully cut the boulders to fit them together tightly without mortar. The site is at an altitude of 3,701 m (12,142 ft). In 1983, Cusco and Saksaywaman together were added to the UNESCO World Heritage List for recognition and protection.