The main areas of Tiawanacu are seven stone and earth structures now known as Kalasasaya, Putuni, Chunchukala, Kherikala, Kantatayita and Akapana. Two archaeological museums and two excavation sites can be visited with a combined ticket (currently 100 Bolivianos for foreign tourists).
Kalasasaya is a low platform to the west of the semi-subterranean temple of Tiwanaku and is framed by upright megaliths. The platform, accessible via stairs, includes an inner courtyard, almost rectangular in shape, measuring 135 × 130 meters and a sunken courtyard. Kalasasaya is sometimes referred to as “America’s Stonehenge.” Today, the Ponce Monolith, the Monk Monolith and the so-called “Sun Gate of Tiwanaku” are located inside the site.