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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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| Independence Dam State Park | State Park | 9.1 | Defiance | Ohio |
| Harrison Lake State Park | State Park | 20.8 | Fayette | Ohio |
| North Turkeyfoot State Park | State Park | 23.7 | McClure | Ohio |
| Lake Hudson Recreation Area | State Park | 35.4 | Clayton | Michigan |
| Cedar Lake Marsh State Fish and Wildlife Area | State Wildlife Area | 36.3 | Fremont | Indiana |
| Missionary Island Wildlife Area | State Wildlife Area | 36.7 | Waterville | Ohio |
| Marsh Lake Wetlands State Fish and Wildlife Area | State Wildlife Area | 38.4 | Fremont | Indiana |
| Pokagon State Park | State Park | 39.7 | Angola | Indiana |
| Fallen Timbers State Memorial | State Memorial | 40.7 | Maumee | Ohio |
| Coldwater Lake State Park | State Park | 41.8 | Coldwater | Michigan |