Cahokia Mounds State Historic Site

Beginning around the year 1050, the people archaeologists call the Mississippians built at Cahokia a true city, laid out with purpose around great mounds and open plazas. It was a center of trade, religion, and power whose influence reached far across the continent, and at its peak it may have held tens of thousands of people, making it larger than many contemporary European cities.

The city was a marvel of organization. Its builders raised more than a hundred mounds of different shapes and purposes, aligned structures to the movements of the sun, and drew in goods and people from across a vast region. Cahokia stands as proof, written in earth, of the scale and complexity of Native civilization in the ancient Midwest.

Cahokia is not the work of a mysterious lost people. It is ancestral to living Native nations, connected to the many peoples of the Mississippian world and to the tribes of this region, including the peoples of the Illinois Confederacy, whose descendants today are enrolled in the Peoria Tribe of Indians of Oklahoma, and others whose histories reach back into this land. The mounds are a sacred inheritance, and the descendants of the mound builders continue their cultures today.

The name Cahokia comes from a later tribe who lived in the area when the French arrived, not from the city's original builders, whose own name for their city is not known. The site should be approached with the respect due to a holy and living heritage, a place of ancestors, not a curiosity of the distant past.

Monks Mound is the great centerpiece, an enormous earthen platform covering many acres at its base and rising in broad terraces to a flat summit that once held a large building at the city's political and spiritual heart. It was built entirely by hand, one carried basket of earth at a time, over many generations, and it remains the largest prehistoric earthwork in the Americas. A stair climbs to the top, where the view takes in the whole floodplain and, on a clear day, the modern skyline of St. Louis beyond.

Nearby stands the reconstructed Woodhenge, a great circle of tall wooden posts that the Cahokians used to mark the movements of the sun through the year, aligning to the sunrise at the solstices and equinoxes. Standing within it makes plain how deeply the builders understood the sky, and how carefully they wove astronomy into the life of their city.

The interpretive center is the place to begin, with exhibits and a full-scale recreation of a Mississippian village that bring the ancient city to life before you set out to walk it. From there, trails and roads lead among the surviving mounds, across the open ground where the grand plaza once lay, and up the slopes of Monks Mound.

The site is broad and largely open to the sky, so it rewards time and good preparation, water, sun protection, and sturdy shoes. Walking the grounds, mound to mound and plaza to plaza, is the way to feel the true scale of what the Cahokians built, a whole city shaped from the earth of the river bottom.

The closest Boutel™ stays, so you can turn this stop into an overnight. Each is a place we chose through independent editorial review, never a paid placement.

The Cahokia Mounds State Historic Site, near Collinsville in southwestern Illinois across the river from St. Louis, preserves the remains of the largest ancient Native American city north of Mexico, a monumental site of profound significance and a designated World Heritage Site. Centuries ago, a great city of the Mississippian culture flourished here, home to a large population who built enormous earthen mounds, plazas, and structures, including Monks Mound, one of the largest earthen mounds in the world. The site preserves these remarkable mounds along with an interpretive center, telling the story of this sophisticated ancient civilization. It is a place of great importance and reverence. A monumental and sacred ancient site, it awes and moves visitors. With its ancient mounds, the site offers a compelling destination in Illinois.

Cahokia was built by Native peoples of the Mississippian culture centuries ago, who created the largest ancient city north of Mexico, a sophisticated society with a large population who raised enormous earthen mounds, plazas, and structures. It is significant as one of the greatest achievements of ancient North America, a World Heritage Site whose scale, organization, and engineering, including the immense Monks Mound, testify to the advanced culture that built it, and it remains significant to Native peoples today. Understanding this heritage deepens a visit to the Cahokia Mounds State Historic Site in Illinois.

You can see the remarkable ancient earthen mounds, including the immense Monks Mound which you can climb by stairs for views, walk the grounds among the mounds and plazas, and visit an interpretive center with exhibits and artifacts telling the story of the great Mississippian city. The ancient mounds, Monks Mound, the interpretive center, and the artifacts are the draws, offering a fascinating and respectful look at this ancient civilization. The great mounds and their story are highlights. Approaching the site with respect for its significance enriches a visit to Cahokia Mounds in Illinois.

Because Cahokia Mounds is an ancient, sacred site of profound significance to Native peoples and a World Heritage Site, visitors should treat it with respect and reverence, staying on designated paths and stairs, not climbing on or disturbing the mounds except where permitted, such as the Monks Mound stairs, and appreciating them as the significant and sacred works they are. Honoring the achievement of the peoples who built the city, and their descendants, respects the site. Approaching Cahokia with respect ensures a meaningful visit in Illinois.

The Cahokia Mounds State Historic Site is near Collinsville in southwestern Illinois, across the river from St. Louis, within reach of the World's Largest Catsup Bottle in Collinsville, the Alton area with the Piasa Bird and Robert Wadlow statue, and the other attractions of southwestern Illinois. That makes Cahokia Mounds a compelling stop to combine with the other attractions of southwestern Illinois on a visit to the state.