The main city center of Tiwanaku (centered in the Lake Titicaca region of present-day southern Peru and western Bolivia) boasted a population of 25,000–40,000. Tiwanaku, an introduction by Dr. Ananda Cohen-Aponte
The Semi-Subterranean Court marks the rise of Tiwanaku’s importance as a regional center. Semi-subterranean Court at the site of Tiwanaku by Dr. Shelley Burian