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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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| Seip Mound State Memorial | State Memorial | 9 | Bainbridge | Ohio |
| Rocky Fork State Park | State Park | 9.6 | Hillsboro | Ohio |
| Fort Hill State Memorial | State Memorial | 10.6 | Hillsboro | Ohio |
| Pike Lake State Park | State Park | 11.7 | Benton | Ohio |
| Fallsville Wildlife Area | State Wildlife Area | 13.6 | New Vienna | Ohio |
| Serpent Mound State Memorial | State Memorial | 17.1 | Peebles | Ohio |
| Oldaker Wildlife Area | State Wildlife Area | 19.1 | Hillsboro | Ohio |
| Tranquility Wildlife Area | State Wildlife Area | 19.6 | Seaman | Ohio |
| Adena State Memorial | State Memorial | 20.6 | Chillicothe | Ohio |
| Brush Creek State Forest | State Forest | 20.8 | Otway | Ohio |