The Ollantaytambo Archaeological Center is one of the most impressive sites in the Sacred Valley of the Incas. Built during the Inca Empire, it is a fortress and citadel located on a steep mountain, with impressive agricultural terraces at its base and a complex of temples and houses at the top.
In addition to the structures, Ollantaytambo also features a water channel system that fed the agricultural terraces at the base of the hill, allowing the Incas to cultivate a large amount of food in a mountainous area.