Sayhuamán is an ancient Inca fortress located on the outskirts of Cusco, Peru. Built in the 15th century, it is renowned for its impressive dry-stone construction, featuring massive stones that fit together without mortar. The site served both military and ceremonial purposes and is a testament to the engineering skills of the Inca civilization. The fortress is situated on a hill, providing a strategic view of the surrounding area. Sayhuamán is also a UNESCO World Heritage Site, recognized for its historical significance and architectural brilliance. Today, it attracts many visitors who come to explore its ruins and learn about Inca history.