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Place · Outdoors

Cahokia Mounds State Historic Site

When
Visit on your scheduleGrounds open daily, dawn until dusk; Interpretive Center lobby Wednesday through Sunday, 9 am to 3 pm.
Where
Cahokia Mounds State Historic Site30 Ramey Street, Collinsville, IL 62234Open in Google Maps ↗
Ages
All ages
Cost
Admission/fees not stated on the page read.
Organizer
Cahokia Mounds State Historic Site

UNESCO World Heritage Site and the largest pre-Columbian site north of Mexico: around 1100 the city covered over 4,000 acres with about 120 earthen mounds and nearly 20,000 people. The state protects about 2,200 acres including 72 mounds; walk the grounds and Monks Mound. The Interpretive Center's cultural gallery is closed (NAGPRA review), but the lobby with restrooms, site model, canoe exhibit, a temporary exhibit and gift shop is open. Dogs must be leashed.

Visit the official site ↗
Official sources checked2026-10-14

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