Cahokia Mounds World Heritage Site

Cahokia Mounds World Heritage Site The grounds are open daily from dawn until dusk. Interpretive Center (IC) hours are Thursday - Sunday from 9 am until 5 pm.
(2760)

At this time masks are required in the IC.

05/29/2026

The Lobby, Gift Shop, and Restrooms will be open Saturday 5/30 from 9-2. The Gallery will remain closed.

05/22/2026
05/21/2026

The Lobby, Gift Shop, and Restrooms will be open Saturday 5/23 from 9-2. The Gallery will remain closed.

Space is limited. To reserve your spot, call 618-346-5169.
05/14/2026

Space is limited. To reserve your spot, call 618-346-5169.

📸 CALLING ALL PHOTOGRAPHERS! Get YOUR photo(s) featured and SUPPORT Cahokia Mounds at the same time! From now until 2 PM...
05/12/2026

📸 CALLING ALL PHOTOGRAPHERS!

Get YOUR photo(s) featured and SUPPORT Cahokia Mounds at the same time!

From now until 2 PM, June 30, 2026, the Cahokia Mounds Museum Society (CMMS) is hosting a Photo Calendar Contest. This fundraising event supports CMMS and its mission to preserve and interpret Cahokia Mounds.

Selected photos may be featured in our upcoming calendar while helping support preservation and educational efforts at Cahokia Mounds State Historic Site.

Submit entries and view contest details here:
https://cahokiamounds.org/events/2026-photo-calendar-contest/

05/08/2026

The Lobby, Gift Shop, and Restrooms will be open Saturday 5/9 from 9-2. The Gallery will remain closed.

Lightning show in the Plaza.
05/05/2026

Lightning show in the Plaza.

05/01/2026

The Lobby, Gift Shop, and Restrooms will be open Saturday 5/2 from 9-2. The Gallery will remain closed.

Spring flowers are arriving!
04/28/2026

Spring flowers are arriving!

04/26/2026

For those of you planning to come to the Market this afternoon, we will be closing at 4.

Address

30 Ramey Drive
Collinsville, IL
62234

Telephone

+16183465160

Website

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