TIWANAKU is the most important archaeological area in Bolivia, more than 3,000 years old, and it contains the mystery of who built it and why. Additionally, we can visit the carved stones of PUMA PUNKU, "Alien culture"

Pumapunku or Puma Punku (Aymara and Quechua, "Gate of the Puma") is a 6th-century, strategically aligned, T-shaped terraced artificial mound with a sunken courtyard and monumental structure on top, near Tiwanaku, La Paz, Bolivia. It is part of the Pumapunku complex, at the Tiwanaku archaeological site, an ancient archaeological complex in the Andes of western Bolivia, a UNESCO World Heritage Site.

The most impressive Tiwanaku monument is the Akapana Pyramid. Originally, it was a pyramid with seven superimposed platforms and stone retaining walls that rose to a height of over 18 m. Only the lowest of these and part of one of the intermediate walls remain intact.

The Kalasasaya, which means "standing stones" in Aymara, is one of the main temples of the Tiwanaku archaeological complex in Bolivia, built around 500 AD. Its main features include a rectangular structure with stone walls and sandstone columns, a sunken central courtyard, and alignment with the cardinal points, serving as an important ceremonial center and astronomical observatory.

The Semi-Subterranean Temple is located in the eastern sector of the Kalasasaya Temple. The walls were made of finely finished red sandstone ashlars alternating with large vertical pillars. Some of the pillars still display anthropomorphic details in low relief (such as a foot). 175 anthropomorphic club heads carved from sandstone, ignimbrite, and limestone are embedded in its walls and along the perimeter. This is the site of origin of the Bennett or Pachamama Monolith and the Khontiki.