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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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| Lake Depue State Fish and Wildlife Area | State Wildlife Area | 1.9 | Princeton | Illinois |
| Miller Anderson Woods State Nature Preserve | State Nature Preserve | 7.8 | Tiskilwa | Illinois |
| Matthiessen State Park | State Park | 14.9 | Oglesby | Illinois |
| Starved Rock State Park | State Park | 17.7 | Oglesby | Illinois |
| Cameron National Wildlife Refuge | National Wildlife Refuge | 18.6 | Henry | Illinois |
| Hennepin Canal Parkway State Park | State Park | 20.4 | Sheffield | Illinois |
| Buffalo Rock State Park | State Park | 20.6 | Ottawa | Illinois |
| Mautino State Fish and Wildlife Area | State Wildlife Area | 21.7 | Buda | Illinois |
| Green River Wildlife Mgmt Area | State Wildlife Management Area | 23.8 | Harmon | Illinois |
| Fox River State Park | State Park | 25.7 | Ottawa | Illinois |