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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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| Jubilee College State Park | State Park | 15.6 | Brimfield | Illinois |
| Sand Ridge State Forest | State Forest | 21.3 | Quiver | Illinois |
| Chautaugua National Wildlife Refuge | National Wildlife Refuge | 26.6 | Glasford | Illinois |
| Cameron National Wildlife Refuge | National Wildlife Refuge | 30.6 | Henry | Illinois |
| Dickson Mounds State Park | State Park | 33.8 | Lewistown | Illinois |
| Snakeden Hollow State Fish and Wildlife Area | State Wildlife Area | 35 | Victoria | Illinois |
| Railsplitter State Park | State Park | 38.4 | Lincoln | Illinois |
| Mason County Wildlife Refuge and Recreation Area | State Wildlife Refuge | 41.3 | Kilbourne | Illinois |
| Miller Anderson Woods State Nature Preserve | State Nature Preserve | 42.2 | Tiskilwa | Illinois |
| Mautino State Fish and Wildlife Area | State Wildlife Area | 47 | Buda | Illinois |