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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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| Ayers Sand Prairie State Nature Preserve | State Nature Preserve | 16.1 | Savanna | Illinois |
| Princeton Wildlife Mgmt Area | State Wildlife Management Area | 21.5 | Princeton | Iowa |
| Mississippi Palisades State Park | State Park | 22.8 | Savanna | Illinois |
| Dalton Pond State Fishing Access Area | State Park | 24.7 | Preston | Iowa |
| White Pines Forest State Park | State Park | 27.4 | Mount Morris | Illinois |
| Green River Wildlife Mgmt Area | State Wildlife Management Area | 27.8 | Harmon | Illinois |
| Castle Rock State Park | State Park | 31.2 | Oregon | Illinois |
| Franklin Creek State Park | State Park | 32.5 | Franklin Grove | Illinois |
| Barber Creek Wildlife Mgmt Area | State Wildlife Management Area | 34.1 | Grand Mound | Iowa |
| Hennepin Canal Parkway State Park | State Park | 35.3 | Sheffield | Illinois |