Cahokia Mounds State Historic Site


Inscribed 1982

Cahokia Mounds is the largest pre-Columbian settlement north of Mexico. This agricultural society may have had a population of 10,000-20,000 at its peak between 1050 and 1150, which was equivalent to the population of many European cities at that time. It was occupied primarily during the Mississippian period (800-1400), when it covered nearly 1,600 hectares and included some 120 mounds. It is a striking example of a complex chiefdom society, with many satellite mound centres and numerous outlying hamlets and villages. Primary features at the site include Monks Mound, the largest prehistoric earthwork in the Americas.


1 of 6
Archaeological remnants of the central section of the ancient settlement that is today known as Cahokia.

2 of 6
Cahokia Mounds State Historic Site lies within a 2,200-acre tract of land.

3 of 6
One of the greatest cities of the world, Cahokia was larger than London was in AD 1250.

4 of 6
The Mississippians who lived here were accomplished builders who erected a wide variety of structures.

5 of 6
They created everything from practical homes for everyday living to monumental public works.

6 of 6
Map of the Grand Plaza at Cahokia Mounds.