Collinsville - Cahokia Mounds State Historic Site

Cahokia Mounds was the largest prehistoric Indian settlement north of Mexico and included the greatest concentration of mounds (120), at the center of which is 100 foot-high Monks Mound, the largest prehistoric earthwork in the Americas. The site was occupied from AD 700-1400, primarily by the Mississippian culture, covered nearly six square miles, and at its peak around AD 1100, may have had 10-20,000 inhabitants.

Besides being a State Historic Site, Cahokia is also a National Historic Landmark and a UNESCO World Heritage Site.

An Interpretive Center tells the story of the site and the people who built it with audiovisual presentations, artifacts, graphics and dioramas, including a life-size village recreation.