Williamson, IL

united states

Williamson is a tiny Madison County community 25 miles northeast of St. Louis, reached via I-270 Exit 15. Most visitors are passing through on Route 111 or making the 30-minute drive from St. Louis. The town of 160 sits in rolling farmland near the historic Cahokia Mounds, where ancient Native Americans built massive earthen pyramids around 1100 AD.