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| Lighthouse |
| Metro and City Park |
| National Forest |
| National Historic Landmark |
| National Historic Site |
| National Historical Park |
| National Memorial |
| National Park |
| National Recreation Area |
| National Seashore |
| National Wildlife Area |
| National Wildlife Refuge |
| State Fish Hatchery |
| State Fishery Area |
| State Forest |
| State Historic Site |
| State Memorial |
| State Natural Area |
| State Nature Preserve |
| State Nursery |
| State Park |
| State Preserve |
| State Recreation Area |
| State Reserve |
| State Wildlife Area |
| State Wildlife Management Area |
| State Wildlife Refuge |
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| Spring Lake State Park | State Park | 3.3 | Canteen | Illinois |
| Cahokia Mounds State Park | State Park | 4.5 | Collinsville | Illinois |
| Lewis And Clark State Memorial Park | State Memorial | 14.8 | Hartford | Illinois |
| Mastodon State Park | State Park | 21.4 | Imperial | Missouri |
| Illinois Caverns State Natural Area | State Natural Area | 24.3 | Waterloo | Illinois |
| Castlewood State Park | State Park | 24.3 | Ballwin | Missouri |
| Randolph County State Recreation Area | State Recreation Area | 31.5 | Marissa | Illinois |
| Babler State Park | State Park | 32.6 | Chesterfield | Missouri |
| Fort Chartres State Park | State Park | 34.7 | Prairie du Rocher | Illinois |
| Pere Marquette State Park | State Park | 35.6 | Grafton | Illinois |