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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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| Harrison State Park | State Park | 14.9 | North Bend | Ohio |
| Hueston Woods State Park | State Park | 18.4 | College Corner | Ohio |
| Kroger Hills State Reserve | State Reserve | 19.6 | Cincinnati | Ohio |
| Miamisburg Mound State Memorial | State Memorial | 26.5 | Miamisburg | Ohio |
| Whitewater State Park | State Park | 27.3 | Liberty | Indiana |
| Fort Ancient State Memorial | State Memorial | 27.6 | Oregonia | Ohio |
| Stonelick Lake State Park | State Park | 29.7 | Goshen | Ohio |
| Big Bone Lick State Park | State Park | 32.1 | Union | Kentucky |
| East Fork State Park | State Park | 33.2 | Bethel | Ohio |
| Sycamore State Park | State Park | 35.4 | Trotwood | Ohio |