Many different buildings, plazas, temples, pools and other structures, all built between the 10th and 11th centuries AD. Inca architecture continues to stun admirers with the technique used to build its enormous walls, palaces and turrets with stone blocks, all done without any type of cement or adhesive. The Intihuatana solar observatory receives the greatest admiration. Fine quality stone carved into the shape of many hands forming a semi-circle. The terraces that encircle the mountain are impressive due to the location varying from 3,000-3,450 masl (9,843 - 11,319 fasl). There are 14 different styles of broad terraces. To manage their water supply, the Incas carried out engineering works creating many channels that travel the length of the terraces, and, despite the height of construction, they even included decorative fountains.

Chinchero is a site that presents exceptional expressions of stonemasonry in the midst of a town that keeps ancient traditions alive. It was constructed by Tupac Inca Yupanqui around 1480 and consists of a collection of architectural spaces: pre-Columbian walls, enclosures, platforms, staircases and altars. The historic centre of Chinchero is also considered unique because it mixes an archaeological complex and a town made from Inca foundations and walls, with a population that has maintained its ancestral customs.