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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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| Castle Rock State Park | State Park | 8.8 | Oregon | Illinois |
| White Pines Forest State Park | State Park | 12.2 | Mount Morris | Illinois |
| Lowden State Park | State Park | 12.7 | Oregon | Illinois |
| Green River Wildlife Mgmt Area | State Wildlife Management Area | 17.4 | Harmon | Illinois |
| Shabbona Lake State Recreation Area | State Recreation Area | 25.7 | Shabbona | Illinois |
| Morrison Rockwood State Park | State Park | 32.5 | Morrison | Illinois |
| Donnelley/DePue State Park | State Park | 36.4 | DePue | Illinois |
| Hennepin Canal Parkway State Park | State Park | 37.5 | Sheffield | Illinois |
| Lake Depue State Fish and Wildlife Area | State Wildlife Area | 37.5 | Princeton | Illinois |
| Rock Cut State Park | State Park | 38.6 | Loves Park | Illinois |