Cahokia Mounds World Heritage Site 
30 Ramey St.
Collinsville, IL 62234
618-346-5160
http://cahokiamounds.org/
State Park: Birding, Hike, History, Picnic, Walk
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.