Sacsayhuaman (also spelled Saksaywaman) is an Incan archaeological site located on a hill above the city of Cusco, Peru. The site is famous for its impressive stone walls that were constructed by the Inca civilization around the 15th century. The walls are made of massive stones that were carved and fitted together without the use of any mortar, a testament to the incredible engineering skills of the Inca people.

The exact purpose of Sacsayhuaman is not clear, but it is believed to have served as a military fortress, as well as a site for religious and ceremonial events. The site is known for its impressive three-tiered zigzag walls, which were designed to resemble the teeth of a puma, an important symbol in Incan culture.

In addition to its stunning stone walls, Sacsayhuaman also features a number of other interesting structures, including a massive amphitheater, a complex system of water channels, and several large stone towers.

Today, Sacsayhuaman is a popular tourist attraction, and visitors can explore the site and learn about the fascinating history of the Inca civilization. The site is also known for its spectacular views of Cusco and the surrounding mountains, making it a must-visit destination for anyone traveling to Peru.