Sacsayhuamán, which can be spelled many different ways (possibly from Quechua language, waman falcon or variable hawk), is a citadel on the northern outskirts of the city of Cusco, Peru, the historic capital of the Inca Empire.
The complex was built by the Inca in the 15th century, particularly under Pachacuti and successors. 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 Sacsayhuamán together were designated as sites on the UNESCO World Heritage List, for international recognition and protection.
1 Day: Hiking up from Cusco you can arrive to Sacsayhuaman, taking a half day to explore this impressive site