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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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| Whitman Mission National Historic Site | National Historic Site | 20.5 | Walla Walla | Washington |
| Emigrant Spring State Park | State Park | 24.6 | Meacham | Oregon |
| Lewis and Clark Trail State Park | State Park | 32 | Dayton | Washington |
| Hilgard Junction State Park | State Park | 33.9 | La Grande | Oregon |
| McKay Creek National Wildlife Refuge | National Wildlife Refuge | 34.4 | Pendleton | Oregon |
| Grouse Flat Wildlife Recreation Area | State Recreation Area | 34.9 | Pomeroy | Washington |
| McNary National Wildlife Refuge | National Wildlife Refuge | 47.2 | Burbank | Washington |