Parcs nationaux
- Death Valley National Park123
- Zion National Park113
- Grand Canyon National Park105
- Sequoia National Park88
- Arches National Park78
- Yellowstone National Park68
- Canyonlands National Park61
- Yosemite National Park58
- Acadia National Park47
- Bryce Canyon National Park43
- Mesa Verde National Park37
- Hawai'i Volcanoes National Park33
- Petrified Forest National Park31
- Everglades National Park26
- Dry Tortugas National Park23
- Redwood National Park20
- Crater Lake National Park11
- Kenai Fjords National Park10
- Shenandoah National Park9
- Denali National Park8
- Glacier Bay National Park7
- Katmai National Park7
- Wrangell-St. Elias National Park6
- Big Bend National Park3
- Olympic National Park3
- Badlands National Park2
- Big Cypress National Preserve1
- Big Thicket National Preserve1