Cahokia Mounds State Historic Site

30 Ramey Street

About Us:

A World Treasure:

In 1982, the United Nations Educational, Scientific, and Cultural Organization (UNESCO), designated Cahokia Mounds a World Heritage Site for its importance to our understanding of the prehistory of North America. Cahokia Mounds has also been recognized as a U. S. National Historic Landmark. Cahokia Mounds is managed by the Illinois Historic Preservation Agency as a State Historic Site.

A Thriving Ancient Metropolis:

According to archaeological finds, the city of Cahokia was inhabited from about A.D. 700 to 1400. At its peak, from A.D. 1050 to 1200, the city covered nearly six square miles and 10,000 to 20,000 people lived here. Over 120 mounds were built over time, and most of the mounds were enlarged several times. Houses were arranged in rows and around open plazas, and vast agricultural fields lay outside the city.

The site is named for the Cahokia subtribe of the Illiniwek (or Illinois tribe, a loose confederacy of related peoples), who moved into the area in the 1600s. They were living nearby when the French arrived about 1699. Sometime in the mid-1800s, local historians suggested the site be called "Cahokia" to honor these later arrivals.

Archaeological investigations and scientific tests, mostly since the 1920s and especially since the 1960s, have provided what is known of the once-thriving community.

The Mystery of Cahokia:

The fate of the prehistoric Cahokians and their city is unknown, but the decline seems to have been gradual, beginning around the 1200s. By A.D. 1400 the site had been abandoned. Exactly where the people went or what tribes they became is yet to be determined.

Depletion of resources probably contributed to the city's decline. Climate change after A.D. 1200 may have affected crop production and the plant and animal resources needed to sustain a large population. War, disease, social unrest, and declining political and economic power may have also taken their toll.


Inge Harding

Wednesday, June 14, 2017

You can either walk around the mounds or bring your bikes! We love coming here to bike around and have a picnic. The visitor center is also wonderful and enlightening. I wish they had more bike paths.

Jennifer Morris

Sunday, July 23, 2017

The visitor center has a large variety of displays about the Cahokia civilization. It is very informative. The short film was also informative. The iPod audiovisual tour really enhanced the experience and was full of information, especially when walking the trails.

Corey Beth

Monday, June 26, 2017

Cahokia Mounds has been my go to spot to relax and unwind since I was a teenager. However I spend my time there-- from chilling on a bench in the visitor's center people watching, climbing the 200+ stairs to the top of Monks Mound, or taking my dogs out for a scenic stroll down one of the parks many, many beautiful, well-maintained-- and often lined with historical and/or educational-- trails.

Chris Lauerman

Sunday, July 2, 2017

Very informative visitors center and an impressive place to visit. Trails are available to walk around and see all the large and most interesting mounds. 30 minutes for a few of them, up to 10 miles.

Scott Thompson

Monday, July 24, 2017

Very up to date museum. Walk up stairs to the top of the highest mound, located across the street from the museum. Cahokia is kind of a dangerous area tho. Be safe.