Two kilometers northeast of Cuzco, the area contains thirty-three archeological sites. The most famous is Fort Sacsayhuaman.

It might well have been a religious structure, but for its location and style, the Spanish and the historians believe it was a military construction. The most important temple in Hanan Qosqo or Upper Cuzco might have been located there, dedicated to Andean cosmology and to the worship of the Inti (sun), the Quilla (moon), Chaska (stars), Illapa (ray), and other divinities. It is described as massive for the size of some of its stones, which weigh between 90 and 120 tons. This is also the stage of the Inti Raymi or Festival of the Sun every 24th June.

On March 13th, 2008, archaeologists discovered the ruins of an ancient temple in the periphery of Sacsayhuaman; it is believed to have been built by the Killke Culture, which occupied the site between 900 and 1200 AD.
This is also the stage of the Inti Raymi or Festival of the Sun every 24th June.