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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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| Hampton National Historical Site | National Historic Site | 13.4 | Towson | Maryland |
| Gunpowder State Park | State Park | 22.5 | Baldwin | Maryland |
| Jonas Green State Park | State Park | 26.2 | Annapolis | Maryland |
| Seneca Creek State Park | State Park | 27 | Gaithersburg | Maryland |
| Sandy Point State Park | State Park | 27.5 | Annapolis | Maryland |
| Robert M Watkins Regional State Park | State Park | 28.2 | Kettering | Maryland |
| Matapeake State Park | State Park | 32.9 | Stevensville | Maryland |
| Deer Creek State Park | State Park | 33.7 | Forest Hill | Maryland |
| Eastern Neck National Wildlife Refuge | National Wildlife Refuge | 34.8 | Rock Hall | Maryland |
| Codorus State Park | State Park | 34.9 | Hanover | Pennsylvania |