Region
- Columbia Gorge >> Clark County >> Washington >> United States 4
- Cowlitz River >> Cowlitz County >> Washington >> United States 4
- Historic Columbia River Highway State Trail >> Hood River County >> Oregon >> United States 4
- Mitchell Point Tunnel (historical) >> Hood River County >> Oregon >> United States 4
- Multnomah Falls >> Multnomah County >> Oregon >> United States 4
- Coos River >> Coos County >> Oregon >> United States 3
- McCloud River >> Shasta County >> California >> United States 3
- Memaloose Island (historical) >> Wasco County >> Oregon >> United States 3
- Oneonta (historical) >> Multnomah County >> Oregon >> United States 3
- Pendleton >> Umatilla County >> Oregon >> United States 3
- Rooster Rock (historical) >> Multnomah County >> Oregon >> United States 3
- Sandy River Bridge >> Multnomah County >> Oregon >> United States 3
- Umpqua River >> Douglas County >> Oregon >> United States 3
- Vista House >> Multnomah County >> Oregon >> United States 3
- Yamhill River >> Yamhill County >> Oregon >> United States 3
- Bandon >> Coos County >> Oregon >> United States 2
- Cabbage Hill >> Umatilla County >> Oregon >> United States 2
- Cape Horn >> Skamania County >> Washington >> United States 2
- Columbia Gorge Hotel >> Hood River >> Hood River County >> Oregon >> United States 2
- Crown Point >> Multnomah County >> Oregon >> United States 2