This temple or palace was built around 1440 A.D. by one of the last Inca emperors, Huayna-Capac or Tupac-Yupanqui, and to this day the remaining rooms prevail as a magnificent sample of the unique style of Inca construction. The site is currently being investigated by Dr. David Brown of the University of Texas, the funding of which was provided by the National Geographic Society. Previously unknown portions of Inca walls and foundations have been discovered throughout the restoration process of the house.

"From this dike, which divides the waters of the Southern Sea and the Atlantic Ocean, one can glimpse, an interminable prairie covered by pumice stone, the ruins of the House of the Inca Huayna-Capac, together with the Panecillo or Sugar Bun. The Panecillo, rising eighty meters above sea Level, is a hillock littered with small brush of the genus Molina, Spermacoces and Cactus. The indigenous, or natives, are certain that this hillock, resembling a bell and extremely regular in shape, is a tumulus, one the hills that the country's ancient inhabitants built to bury their princes of illustrious persons. In support of this theory, the natives claim that the Panecillo is made up of volcanic rubble throughout its base as in its peak or summit." ALEXANDER VON HUMBOLDT (description of Callo Mound)

The peaceful atmosphere and magical landscape, history and culture, combine to make San Agustin de Callo a sanctuary of inspiration for artists and lovers of nature and a restful haven for weary travelers.