Warning (2): include(/var/www/vhosts/vcc_staging/app/Resource/aarp2_master.head.html): failed to open stream: No such file or directory [APP/View/Layouts/aarp_2023.ctp, line 53]
Warning (2): include() [<a href='http://php.net/function.include'>function.include</a>]: Failed opening '/var/www/vhosts/vcc_staging/app/Resource/aarp2_master.head.html' for inclusion (include_path='/var/www/vhosts/vcc_staging/lib:.:/usr/share/pear:/usr/share/php') [APP/View/Layouts/aarp_2023.ctp, line 53]
Warning (2): include(/var/www/vhosts/vcc_staging/app/Resource/aarp2_master.resource.root.html) [<a href='http://php.net/function.include'>function.include</a>]: failed to open stream: No such file or directory [APP/View/Layouts/aarp_2023.ctp, line 54]
Warning (2): include() [<a href='http://php.net/function.include'>function.include</a>]: Failed opening '/var/www/vhosts/vcc_staging/app/Resource/aarp2_master.resource.root.html' for inclusion (include_path='/var/www/vhosts/vcc_staging/lib:.:/usr/share/pear:/usr/share/php') [APP/View/Layouts/aarp_2023.ctp, line 54]
St. Louis
Highlighting Collinsville
Change City

Cahokia Mounds State Historic Site

30 Ramey Street
Collinsville, IL 62234

618-346-5160

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.

Please use "Flag This Place" to alert us about content that is inappropriate or needs immediate attention. Nothing you submit will be shared with other site visitors.
Explore the free AARP HomeFit Guide
Upcoming AARP Events

AARP Events for Collinsville

View All AARP Events

image of two AARP membership cards
Only $12 your first year with Automatic Renewal
  • Immediate access to your member benefits
  • Discounts on travel and everyday savings
  • Subscription to AARP The Magazine
  • FREE second membership
Join AARP
Already a member? Renew or Print Card
Facebook

Contact AARP
in St. Louis

Facebook icon   Twitter icon   Instagram icon
Return to top 
Warning (2): include(/var/www/vhosts/vcc_staging/app/Resource/aarp2_master.footer.html) [<a href='http://php.net/function.include'>function.include</a>]: failed to open stream: No such file or directory [APP/View/Layouts/aarp_2023.ctp, line 242]
Warning (2): include() [<a href='http://php.net/function.include'>function.include</a>]: Failed opening '/var/www/vhosts/vcc_staging/app/Resource/aarp2_master.footer.html' for inclusion (include_path='/var/www/vhosts/vcc_staging/lib:.:/usr/share/pear:/usr/share/php') [APP/View/Layouts/aarp_2023.ctp, line 242]
Warning (2): include(/var/www/vhosts/vcc_staging/app/Resource/aarp2_master.bodyTargeting.html) [<a href='http://php.net/function.include'>function.include</a>]: failed to open stream: No such file or directory [APP/View/Layouts/aarp_2023.ctp, line 243]
Warning (2): include() [<a href='http://php.net/function.include'>function.include</a>]: Failed opening '/var/www/vhosts/vcc_staging/app/Resource/aarp2_master.bodyTargeting.html' for inclusion (include_path='/var/www/vhosts/vcc_staging/lib:.:/usr/share/pear:/usr/share/php') [APP/View/Layouts/aarp_2023.ctp, line 243]
Warning (2): include(/var/www/vhosts/vcc_staging/app/Resource/aarp2_master.resource.footer.root.html) [<a href='http://php.net/function.include'>function.include</a>]: failed to open stream: No such file or directory [APP/View/Layouts/aarp_2023.ctp, line 244]
Warning (2): include() [<a href='http://php.net/function.include'>function.include</a>]: Failed opening '/var/www/vhosts/vcc_staging/app/Resource/aarp2_master.resource.footer.root.html' for inclusion (include_path='/var/www/vhosts/vcc_staging/lib:.:/usr/share/pear:/usr/share/php') [APP/View/Layouts/aarp_2023.ctp, line 244]