- Cahokia Mounds State Historic Site
 - 2200-acre tract preserving the remnants of the ancient Mississippian's central city, now situated between St. Louis, Missouri, and Collinsville, Illinois. - Illinois Association of Park Districts
- Nonprofit service, research and education organisation that represents park districts, forest preserves, conservation and recreation agencies.
- Illinois Prairie Path
- 55-mile-long biking, hiking, jogging, equestrian, and nature trail in Cook, DuPage and Kane Counties.
- Lake Renwick Heron Rookery Nature Preserve
- Provides protected nesting sites for the local herons and egrets.
- Shawnee National Forest
- Headquartered in Harrisburg, IL.
|
