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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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| Herrington Manor State Park | State Park | 0.2 | Oakland | Maryland |
| Swallow Falls State Forest | State Forest | 2.9 | Oakland | Maryland |
| Mount Nebo State Forest And Game Preserve | State Forest | 3.3 | West Oakland | Maryland |
| Cathedral State Park | State Park | 9.9 | Aurora | West Virginia |
| Potomac State Forest | State Forest | 11.9 | Red House | Maryland |
| Savage River State Forest | State Forest | 18.1 | Grantsville | Maryland |
| Coopers Rock State Forest | State Forest | 22.9 | Bruceton Mills | West Virginia |
| Casselman Bridge State Park | State Park | 23.3 | Grantsville | Maryland |
| Blackwater Falls State Park | State Park | 23.9 | Davis | West Virginia |
| Ohiopyle State Park | State Park | 26.6 | Ohiopyle | Pennsylvania |