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- Bridges 9
- Northwest, Pacific 9
- Photography 9
- Bodies of water 7
- Waterfalls 5
- Forests and forestry 4
- Rivers 4
- Formations (Geology) 3
- Mountains 2
- Riparian areas 2
- Roads--Design and construction 2
- Scenic byways 2
- Tunnels 1
- Volcanoes 1
