10 Must-Visit UNESCO World Heritage Sites in the United States

7. Cahokia Mounds State Historic Site

Cahokia Mounds preserves an extensive pre-Columbian cityscape of earthworks and mounds that testify to significant social and engineering achievements in North America. The interpretive center provides exhibits that explain mound construction, the site’s regional importance, and the archaeological record. Walking trails let visitors view large earthen structures and imagine the scale of the ancient settlement. Seasonal programs and guided walks add depth to a visit and are ideal for families or school groups. Because it’s an archaeological site, visitor behavior is guided by preservation rules—stay on marked paths and follow signage. The site is especially rewarding for readers interested in early North American urbanism and engineering feats. Check local opening hours and any special events before travel to make the most of a visit.