Hot Springs National Park (AR)

Yellowstone National Park (WY)

Yosemite National Park (CA)

Grand Canyon National Park (AZ)

Mount Hood National Forest (OR)

Gettysburg National Military Park (PA)

Glacier National Park (MT)

Olympic National Park (WA)

Vicksburg National Military Park (MS)

Chickasaw National Recreation Area (OK)

El Yunque National Forest (PR)

Chaco Culture National Historical Park (NM)

Acadia National Park (ME)

Hawaii Volcanoes National Park (HI)

Denali National Park and Preserve (AK)

White Mountain National Forest (NH)

Perry's Victory and International Peace Memorial (OH)

Great Basin National Park (NV)

Fort McHenry National Monument (MD)

Mount Rushmore National Memorial (SD)

Great Smoky Mountains National Park (TN)

Shenandoah National Park (VA)

Arches National Park (UT)

Great Sand Dunes National Park and Preserve

Everglades National Park (FL)

Homestead National Monument of America (NE)

Kisatchie National Forest (LA)

Blue Ridge Parkway (NC)

Bombay Hook National Wildlife Refuge (DE)

Saratoga National Historical Park (NY)

Shawnee National Forest (IN)

Cumberland Gap National Historical Park (GA)

Harpers Ferry National Historical Park (WV)

Theodore Roosevelt National Park (ND)

Fort Moultrie (Fort Sumter National Monument) (SC)

Effigy Mounds National Monument (IA)

Frederick Douglass National Historic Site (DC)

Ozark National Scenic Riverways (AR)

Ellis Island (Statue of Liberty National Monument) (NJ)

George Rogers Clark National Historical Park (IN)

Pictured Rocks National Lakeshore (MI)

Apostle Islands National Lakeshore (WI)

Voyageurs National Park (MN)

Cumberland Island National Seashore (GA)

Block Island National Wildlife Refuge (RI)

Lowell National Historical Park (MA)

American Memorial Park (MP)

War in the Pacific National Historical Park (GU)

San Antonio Missions National Historical Park (TX)

Frank Church–River of No Return Wilderness (ID)

National Park of American Samoa (AS)

Weir Farm National Historic Site (CT)

Salt River Bay National Historical Park and Ecological Preserve (VI)

Marsh-Billings-Rockefeller National Historical Park (VT)

Tallgrass Prairie National Preserve (KS)

Tuskegee Airmen National Historic Site (AL)