1,000 campgrounds
Great Smoky Mountains National Park
Grand Teton National Park
Olympic National Park
Denali National Park and Preserve
Arches National Park
Mount Rainier National Park
Great Basin National Park
Wind Cave National Park
Biscayne National Park
Death Valley National Park
Buffalo National River
Big Bend National Park
Kenai Fjords National Park
North Cascades National Park
Yellowstone National Park
Everglades National Park
Glacier National Park
