How to get out Alton (Illinois)
Cahokia Mounds State Historic Site, 30 Ramey Street, Collinsville, ☎ 1 618 346-5160, . Cahokia Mounds, a UNESCO World Heritage site, was the largest Native American city north of Mexico before the time of Columbus. You can climb to the top of the largest prehistoric earthen work in the new world, visit a world-class museum, and learn about life in Illinois a thousand years ago. �
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The Most Frequently Asked Travel Questions about Alton (Illinois)
