Free Admission - National Park Week

This week (until April 29), you can get into almost 400 national parks for free. Here is the LINK to read more about it and there is a list below to see what parks are in your state.

Alaska
Denali National Park and Preserve

Arizona
Casa Grande Ruins National Monument
Chiricahua National Monument
Glen Canyon National Recreation Area
Grand Canyon National Park
Lake Mead National Recreation Area
Montezuma Castle National Monument
Organ Pipe Cactus National Monument
Petrified Forest National Park
Pipe Spring National Monument
Saguaro National Park
Sunset Crater Volcano National Monument
Tonto National Monument
Tumacacori National Historical Park
Tuzigoot National Monument
Walnut Canyon National Monument
Wupatki National Monument

Arkansas
Fort Smith National Historic Site
Pea Ridge National Military Park

California
Cabrillo National Monument
Death Valley National Park
Joshua Tree National Park
Lassen Volcanic National Park
Lava Beds National Monument
Muir Woods National Monument
Pinnacles National Monument
Sequoia National Park
Whiskeytown National Recreation Area
Yosemite National Park

Colorado
Black Canyon of the Gunnison National Park
Colorado National Monument
Dinosaur National Monument
Florissant Fossil Beds National Monument
Great Sand Dunes National Park and Preserve
Hovenweep National Monument
Mesa Verde National Park
Rocky Mountain National Park

Florida
Canaveral National Seashore
Castillo de San Marcos National Monument
Dry Tortugas National Park
Everglades National Park
Gulf Islands National Seashore

Georgia
Chattahoochee River National Recreation Area
Chickamauga and Chattanooga National Military Park
Cumberland Island National Seashore
Fort Frederica National Monument
Fort Pulaski National Monument

Hawaii
Haleakalā National Park
Hawai'i Volcanoes National Park
Pu'uhonua o Hōnaunau National Historical Park

Idaho
Craters of the Moon National Monument
Yellowstone National Park

Indiana
Lincoln Boyhood National Memorial

Maine
Acadia National Park

Maryland
Antietam National Battlefield
Assateague Island National Seashore
Chesapeake and Ohio Canal National Historical Park
Fort McHenry NM and Historic Shrine National Monument
Fort Washington Park
Harpers Ferry National Historical Park

Mississippi
Gulf Islands National Seashore

Massachusetts
Adams National Historical Park
Cape Cod National Seashore

Michigan
Sleeping Bear Dunes National Lakeshore

Minnesota
Pipestone National Monument

Mississippi
Vicksburg National Military Park

Missouri
Harry S Truman National Historic Site
Jefferson National Expansion Memorial
Wilson's Creek National Battlefield

Montana
Bighorn Canyon National Recreation Area
Glacier National Park
Little Bighorn Battlefield National Monument
Yellowstone National Park

Nebraska
Scotts Bluff National Monument

Nevada
Death Valley National Park
Lake Mead National Recreation Area

New Hampshire
Saint-Gaudens National Historic Site

New Jersey
Thomas Edison National Historical Park
Morristown National Historical Park

New Mexico
Aztec Ruins National Monument
Bandelier National Monument
Capulin Volcano National Monument
Carlsbad Caverns National Park
Chaco Culture National Historical Park
El Morro National Monument
Fort Union National Monument
Gila Cliff Dwellings National Monument
Pecos National Historical Park
White Sands National Monument

New York
Eleanor Roosevelt National Historic Site
Home of Franklin D. Roosevelt National Historic Site
Martin Van Buren National Historic Site
Sagamore Hill National Historic Site
Saratoga National Historical Park
Vanderbilt Mansion National Historic Site

North Carolina
Wright Brothers National Memorial

North Dakota
Theodore Roosevelt National Park

Ohio
James A. Garfield National Historic Site
Perry's Victory and International Peace Memorial National Memorial

Oklahoma
Fort Smith National Historic Site

Oregon
Crater Lake National Park
Lewis & Clark National Historical Park

Pennsylvania
Allegheny Portage Railroad National Historic Site
Fort Necessity National Battlefield
Johnstown Flood National Memorial
Steamtown National Historic Site

Puerto Rico
San Juan National Historic Site

South Carolina
Fort Sumter National Monument

South Dakota
Badlands National Park
Jewel Cave National Monument

Tennessee
Chickamauga and Chattanooga National Military Park

Texas
Big Bend National Park
Fort Davis National Historic Site
Guadalupe Mountains National Park
Padre Island National Seashore

Utah
Arches National Park
Bryce Canyon National Park
Canyonlands National Park
Capitol Reef National Park
Cedar Breaks National Monument
Dinosaur National Monument
Glen Canyon National Recreation Area
Golden Spike National Historic Site
Hovenweep National Monument
Natural Bridges National Monument
Zion National Park

Virgin Islands
Christiansted National Historic Site

Virginia
Appomattox Court House National Historical Park
Assateague Island National Seashore
Colonial National Historical Park
George Washington Memorial Parkway's Great Falls Park
Manassas National Battlefield Park
Petersburg National Battlefield
Prince William Forest Park
Shenandoah National Park

Washington
Fort Vancouver National Historic Site
Lewis & Clark National Historical Park
Mount Rainier National Park
Olympic National Park
Whitman Mission National Historic Site

West Virginia
Harpers Ferry National Historical Park

Wyoming
Bighorn Canyon National Recreation Area
Devils Tower National Monument
Fort Laramie National Historic Site
Grand Teton National Park
Yellowstone National Park