The Citadelle de Pisac Q'allaqasa, located in the ruins of Pisac in Peru's Sacred Valley, offers a stunning view over the Urubamba Valley. This strategic Inca outpost, perched high on a mountain, features well-preserved structures like the Temple of the Sun and Intihuatana stone. You can explore the terraces, tunnels, and unique architectural techniques used by the Incas.

It takes a few hours to explore this site and there is a lot of stairs so be prepared to walk. This site is included in the general admissions tickets for all the ruins around Cusco!