Cahokia Mounds State Historic Site
Cahokia Mounds State Historic Site Logo
Collinsville
30 Ramey St.
Collinsville, IL 62234
618-346-5160
Located approximately eight miles from downtown St. Louis, the remains of the most sophisticated prehistoric native civilization north of Mexico are preserved at Cahokia Mounds State Historic Site. Within the 2,200-acre tract, located a few miles west of Collinsville, Illinois, lie the archaeological remnants of the central section of the ancient settlement that is today known as Cahokia.

Once one of the greatest cities of the world, Cahokia was larger than London was in AD 1250. The Mississippians who lived here were accomplished builders who erected a wide variety of structures from practical homes for everyday living to monumental public works that have maintained their grandeur for centuries.

In addition to a world-class Interpretive Center, 800 of the 2,200 acres of the original site are accessible to the public. No trip is complete without exploring the site, climbing the 100 foot Monks Mound and experiencing the reconstructed ancient sun calendar, Woodhenge.