About
Cahokia Mounds State Historic Site
Cahokia Mounds State Historic Site in Collinsville preserves the remains of the largest pre-Columbian city north of Mexico. Visitors can explore earthen mounds, trails, interpretive exhibits, and the landscape around Monks Mound, one of the site's most recognizable features. It is an essential regional history stop for understanding Indigenous history and the Mississippian culture near modern St. Louis.