• Cahokia Mounds State Historic Site - A prehistoric civilization best known for the large earthen mounds they left behind lived here. The civilization thrived here for 600 years before mysteriously disappearing sometime before 1350 CE. The center of their civilization was dominated by Monk’s Mound, the largest prehistoric earthen construction in the Americas.

• Lifetime access to Interstate 55 tour from St. Louis, MO to Springfield, IL
• Access to the VoiceMap application
• Offline availability of audio, maps, and geodata

• Smartphone
• Transportation
• Food/Drink
• Tickets or entrance fees to any museums or other attractions en route

This autonomous GPS audio tour revives the landscape, settlements, inhabitants, and past associated with the sights you encounter while traversing Interstate 55 from St. Louis, MO to Springfield, IL. It converts a dull journey into an exciting, pleasure-filled, and no longer tedious expedition.

Safety advice: Continually pay attention to the road, ensure safe driving, and adhere to all traffic regulations. Nothing in this tour necessitates your immediate or extended focus. If an item you hear piques your interest to investigate a point of interest more thoroughly, depart at the following exit and utilize local routes to reach the destination. Your optimal view of each point of interest is NOT from the Interstate, so do not pull over or decelerate due to the tour.

The audio initiates automatically at the appropriate time and location utilizing your phone’s GPS and the VoiceMap application.

For a full refund, cancel at least 24 hours before the scheduled departure time.