1,000 campgrounds
Capitol Reef National Park
Death Valley National Park
Big Cypress National Preserve
Mount Rainier National Park
Glacier National Park
Yosemite National Park
Canyonlands National Park
Amistad National Recreation Area
Yellowstone National Park
Olympic National Park
Great Smoky Mountains National Park
Greenbelt Park
Whiskeytown National Recreation Area
North Cascades National Park
Grand Teton National Park
Guadalupe Mountains National Park
Chickasaw National Recreation Area
Glen Canyon National Recreation Area
Saguaro National Park
Lake Meredith National Recreation Area
