Cahokia Mounds State Historic Site
Archaeological · Collinsville, Illinois
The remains of the largest pre-Columbian city north of Mexico, built by Mississippian people from around 1050 CE and abandoned by roughly 1350, on the flood plain across the river from present-day St. Louis. Some eighty earthen mounds survive of an original hundred and twenty, dominated by Monks Mound — the largest earthwork in the Americas, a hundred feet high with a base larger than the Great Pyramid's. It is a UNESCO World Heritage Site and one of only a couple of dozen in the United States.
30 Ramey Street, Collinsville, Illinois, 62234, United States
Grounds open daily, roughly 8 AM to dusk, free. Interpretive centre hours vary and it has been closed for renovation — verify current status before travelling.
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