Region
- Meacham >> Umatilla County >> Oregon >> United States 20
- Blalock Islands >> Benton County >> Washington >> United States 19
- Cascade Locks >> Hood River County >> Oregon >> United States 19
- Cascade Range >> Hood River County >> Oregon >> United States 19
- Columbia River >> Clatsop County >> Oregon >> United States 19
- Adams >> Umatilla County >> Oregon >> United States 18
- Oregon King Mine >> Jefferson County >> Oregon >> United States 18
- Shoshone Falls >> Twin Falls County >> Idaho >> United States 18
- Blue Mountains >> Union County >> Oregon >> United States 17
- Buckaroo Creek >> Umatilla County >> Oregon >> United States 17
- Nespelem Falls >> Okanogan County >> Washington >> United States 17
- Lehman Springs >> Umatilla County >> Oregon >> United States 16
- Memaloose Island (historical) >> Umatilla County >> Oregon >> United States 16
- Klickitat River >> Klickitat County >> Washington >> United States 15
- Bridge of the Gods >> Hood River County >> Oregon >> United States 14
- Fort Simcoe Historical State Park >> Yakima County >> Washington >> United States 13
- Sheridan >> Yamhill County >> Oregon >> United States 12
- Fort Walla Walla Historical Monument >> Walla Walla County >> Washington >> United States 11
- Hermiston >> Umatilla County >> Oregon >> United States 11
- Powers >> Coos County >> Oregon >> United States 11