Currently there are 433 National Park Units...
Birmingham Civil Rights National Monument; Alabama
Freedom Riders National Monument; Alabama
Horseshoe Bend National Military Park; Alabama
Little River Canyon National Preserve; Alabama
Russell Cave National Monument; Alabama
Tuskegee Airmen National Historic Site; Alabama
Tuskegee Institute National Historic Site; Alabama
Alagnak Wild River; Alaska
Aniakchak National Monument; Alaska
Aniakchak National Preserve; Alaska
Bering Land Bridge National Preserve; Alaska
Cape Krusenstern National Monument; Alaska
Denali National Park; Alaska
Denali National Preserve; Alaska
Gates of the Arctic National Park; Alaska
Gates of the Arctic National Preserve; Alaska
Glacier Bay National Park; Alaska
Glacier Bay National Preserve; Alaska
Katmai National Park; Alaska
Katmai National Preserve; Alaska
Kenai Fjords National Park; Alaska
Klondike Gold Rush National Historical Park; Alaska, Washington
Kobuk Valley National Park; Alaska
Lake Clark National Park; Alaska
Lake Clark National Preserve; Alaska
Noatak National Preserve; Alaska
Sitka National Historical Park; Alaska
Wrangell-St. Elias National Park; Alaska
Wrangell-St. Elias National Preserve; Alaska
Yukon-Charley Rivers National Preserve; Alaska
National Park of American Samoa; American Samoa
Canyon De Chelly National Monument; Arizona
Casa Grande Ruins National Monument; Arizona
Chiricahua National Monument; Arizona
Coronado National Memorial; Arizona
Fort Bowie National Historic Site; Arizona
Glen Canyon National Recreation Area; Arizona, Utah
Grand Canyon National Park; Arizona
Hohokam Pima National Monument; Arizona
Hubbell Trading Post National Historic Site; Arizona
Montezuma Castle National Monument; Arizona
Navajo National Monument; Arizona
Organ Pipe Cactus National Monument; Arizona
Petrified Forest National Park; Arizona
Pipe Spring National Monument; Arizona
Saguaro National Park; Arizona
Sunset Crater Volcano National Monument; Arizona
Tonto National Monument; Arizona
Tumacacori National Historical Park; Arizona
Tuzigoot National Monument; Arizona
Walnut Canyon National Monument; Arizona
Wupatki National Monument; Arizona
Arkansas Post National Memorial; Arkansas
Buffalo National River; Arkansas
Fort Smith National Historic Site; Arkansas
Hot Springs National Park; Arkansas
Little Rock Central High School National Historic Site; Arkansas
Pea Ridge National Military Park; Arkansas
President William Jefferson Clinton Birthplace Home National
Historic Site; Arkansas
Cabrillo National Monument; California
Castle Mountains National Monument; California
César E. Chávez National Monument; California
Channel Islands National Park; California
Death Valley National Park; California, Nevada
Devils Postpile National Monument; California
Eugene O'Neill National Historic Site; California
Fort Point National Historic Site; California
Golden Gate National Recreation Area; California
John Muir National Historic Site; California
Joshua Tree National Park; California
Kings Canyon National Park; California
Lassen Volcanic National Park; California
Lava Beds National Monument; California
Manzanar National Historic Site; California
Mojave National Preserve; California
Muir Woods National Monument; California
Pinnacles National Park; California
Point Reyes National Seashore California
Port Chicago Naval Magazine National Memorial; California
Redwood National Park; California
Rosie the Riveter World War II Home Front National
Historical Park; California
San Francisco Maritime National Historical Park; California
Santa Monica Mountains National Recreation Area; California
Sequoia National Park; California
Tule Lake National Monument; California
Whiskeytown-Shasta-Trinity National Recreation Area; California
Yosemite National Park; California
Amache National Historic Site; Colorado
Bent's Old Fort National Historic Site; Colorado
Black Canyon of the Gunnison National Park; Colorado
Colorado National Monument; Colorado
Curecanti National Recreation Area; Colorado
Dinosaur National Monument; Colorado, Utah
Florissant Fossil Beds National Monument; Colorado
Great Sand Dunes National Park; Colorado
Great Sand Dunes National Preserve; Colorado
Hovenweep National Monument; Colorado, Utah
Mesa Verde National Park; Colorado
Rocky Mountain National Park; Colorado
Sand Creek Massacre National Historic Site; Colorado
Yucca House National Monument; Colorado
New England National Scenic Trail; Connecticut, Massachusetts
Weir Farm National Historical Park; Connecticut
First State National Historical Park; Delaware, Pennsylvania
Big Cypress National Preserve; Florida
Biscayne National Park; Florida
Canaveral National Seashore; Florida
Castillo de San Marcos National Monument; Florida
De Soto National Memorial; Florida
Dry Tortugas National Park; Florida
Everglades National Park; Florida
Fort Caroline National Memorial; Florida
Fort Matanzas National Monument; Florida
Gulf Islands National Seashore; Florida, Mississippi
Timucuan Ecological and Historic Preserve; Florida
Andersonville National Historic Site; Georgia
Chattahoochee River National Recreation Area; Georgia
Chickamauga & Chattanooga National Military Park; Georgia, Tennessee
Cumberland Island National Seashore; Georgia
Fort Frederica National Monument; Georgia
Fort Pulaski National Monument; Georgia
Jimmy Carter National Historical Park; Georgia
Kennesaw Mountain National Battlefield Park; Georgia
Martin Luther King Jr. National Historical Park; Georgia
Ocmulgee Mounds National Historical Park; Georgia
War in the Pacific National Historical Park; Guam
Haleakala National Park; Hawaii
Hawaii Volcanoes National Park; Hawaii
Honouliuli National Historic Site; Hawaii
Kalaupapa National Historical Park; Hawaii
Kaloko-Honokohau National Historical Park; Hawaii
Pearl Harbor National Memorial; Hawaii
Pu'uhonua O Honaunau National Historical Park; Hawaii
Pu'ukohola Heiau National Historic Site; Hawaii
City of Rocks National Reserve; Idaho
Craters of the Moon National Monument; Idaho
Craters of the Moon National Preserve; Idaho
Hagerman Fossil Beds National Monument; Idaho
Minidoka National Historic Site; Idaho
Nez Perce National Historical Park; Idaho
Lincoln Home National Historic Site; Illinois
New Philadelphia National Historic Site; Illinois
Pullman National Historical Park; Illinois
Springfield 1908 Race Riot National Monument; Illinois
George Rogers Clark National Historical Park; Indiana
Indiana Dunes National Park; Indiana
Lincoln Boyhood National Memorial; Indiana
Effigy Mounds National Monument; Iowa
Herbert Hoover National Historic Site; Iowa
Brown v. Board of Education National Historical Park; Kansas
Fort Larned National Historic Site; Kansas
Fort Scott National Historic Site; Kansas
Nicodemus National Historic Site; Kansas
Tallgrass Prairie National Preserve; Kansas
Abraham Lincoln Birthplace National Historical Park; Kentucky
Camp Nelson National Monument; Kentucky
Cumberland Gap National Historical Park; Kentucky, Tennessee, Virginia
Mammoth Cave National Park; Kentucky
Mill Springs Battlefield National Monument; Kentucky
Cane River Creole National Historical Park; Louisiana
Jean Lafitte National Historical Park and Preserve; Louisiana
New Orleans Jazz National Historical Park; Louisiana
Poverty Point National Monument; Louisiana
Acadia National Park; Maine
Appalachian National Scenic Trail; Maine to Georgia
Katahdin Woods and Waters National Monument; Maine
Saint Croix Island International Historic Site; Maine
Antietam National Battlefield; Maryland
Assateague Island National Seashore; Maryland, Virginia
Catoctin Mountain Park; Maryland
Chesapeake and Ohio Canal National Historical Park; Maryland, Washington DC
Clara Barton National Historic Site; Maryland
Fort McHenry National Monument and Historic Shrine; Maryland
Fort Washington Park; Maryland
Greenbelt Park; Maryland
Hampton National Historic Site; Maryland
Harriet Tubman Underground Railroad National Historical Park; Maryland
Monocacy National Battlefield; Maryland
Piscataway Park; Maryland
Potomac Heritage National Scenic Trail; Maryland, Pennsylvania, Virginia, Washington DC
Thomas Stone National Historic Site; Maryland
Adams National Historical Park; Massachusetts
Boston African American National Historic Site; Massachusetts
Boston Harbor Islands National Recreation Area; Massachusetts
Boston National Historical Park; Massachusetts
Cape Cod National Seashore; Massachusetts
Frederick Law Olmsted National Historic Site; Massachusetts
John F. Kennedy National Historic Site; Massachusetts
Longfellow House–Washington's Headquarters National Historic
Site; Massachusetts
Lowell National Historical Park; Massachusetts
Minute Man National Historical Park; Massachusetts
New Bedford Whaling National Historical Park; Massachusetts
Salem Maritime National Historic Site; Massachusetts
Saugus Iron Works National Historic Site; Massachusetts
Springfield Armory National Historic Site; Massachusetts
Isle Royale National Park; Michigan
Keweenaw National Historical Park; Michigan
North Country National Scenic Trail; Michigan, Minnesota, North Dakota, New York, Ohio, Pennsylvania, Vermont, Wisconsin
Pictured Rocks National Lakeshore; Michigan
River Raisin National Battlefield Park; Michigan
Sleeping Bear Dunes National Lakeshore; Michigan
Grand Portage National Monument; Minnesota
Mississippi National River and Recreation Area; Minnesota
Pipestone National Monument; Minnesota
Voyageurs National Park; Minnesota
Brices Cross Roads National Battlefield Site; Mississippi
Emmett Till and Mamie Till-Mobley National Monument; Illinois, Mississippi
Medgar and Myrlie Evers Home National Monument; Mississippi
Natchez National Historical Park; Mississippi
Natchez Trace Parkway; Mississippi, Alabama, Tennessee
Natchez Trace National Scenic Trail; Mississippi, Alabama, Tennessee
Tupelo National Battlefield; Mississippi
Vicksburg National Military Park; Mississippi, Louisiana
Gateway Arch National Park; Missouri
George Washington Carver National Monument; Missouri
Harry S Truman National Historic Site; Missouri
Ozark National Scenic Riverways; Missouri
Ste. Genevieve National Historical Park; Missouri
Ulysses S. Grant National Historic Site; Missouri
Wilson's Creek National Battlefield; Missouri
Big Hole National Battlefield; Montana
Bighorn Canyon National Recreation Area; Montana, Wyoming
Glacier National Park; Montana
Grant-Kohrs Ranch National Historic Site; Montana
Little Bighorn Battlefield National Monument; Montana
Agate Fossil Beds National Monument; Nebraska
Homestead National Historical Park; Nebraska
Missouri National Recreational River; Nebraska, South Dakota
Niobrara National Scenic River; Nebraska
Scotts Bluff National Monument; Nebraska
Great Basin National Park; Nevada
Lake Mead National Recreation Area; Nevada, Arizona
Tule Springs Fossil Beds National Monument; Nevada
Saint-Gaudens National Historical Park; New Hampshire
Delaware Water Gap National Recreation Area; New Jersey, Pennsylvania
Great Egg Harbor Scenic and Recreational River; New Jersey
Morristown National Historical Park; New Jersey
Paterson Great Falls National Historical Park; New Jersey
Thomas Edison National Historical Park; New Jersey
Aztec Ruins National Monument; New Mexico
Bandelier National Monument; New
Mexico
Capulin Volcano National Monument; New Mexico
Carlsbad Caverns National Park; New Mexico
Chaco Culture National Historical Park; New Mexico
El Malpais National Monument; New
Mexico
El Morro National Monument; New
Mexico
Fort Union National Monument; New
Mexico
Gila Cliff Dwellings National Monument; New Mexico
Manhattan Project National Historical Park; New Mexico, Tennessee, Washington
Pecos National Historical Park; New Mexico
Petroglyph National Monument; New
Mexico
Salinas Pueblo Missions National Monument; New Mexico
Valles Caldera National Preserve; New Mexico
White Sands National Park; New
Mexico
African Burial Ground National Monument; New York
Castle Clinton National Monument; New York
Eleanor Roosevelt National Historic Site; New York
Federal Hall National Memorial; New York
Fire Island National Seashore; New York
Fort Stanwix National Monument; New York
Gateway National Recreation Area; New York, New Jersey
General Grant National Memorial; New York
Governors Island National Monument; New York
Hamilton Grange National Memorial; New York
Harriet Tubman National Historical Park; New York
Home of Franklin D. Roosevelt National Historic Site; New York
Martin Van Buren National Historic Site; New York
Saint Paul's Church National Historic Site; New York
Sagamore Hill National Historic Site; New York
Saratoga National Historical Park; New York
Statue of Liberty National Monument; New York, New Jersey
Stonewall National Monument; New
York
Theodore Roosevelt Birthplace National Historic Site; New York
Theodore Roosevelt Inaugural National Historic Site; New York
Vanderbilt Mansion National Historic Site; New York
Women's Rights National Historical Park; New York
Blue Ridge Parkway; North Carolina, Virginia
Cape Hatteras National Seashore; North Carolina
Cape Lookout National Seashore; North Carolina
Carl Sandburg Home National Historic Site; North Carolina
Fort Raleigh National Historic Site; North Carolina
Guilford Courthouse National Military Park; North Carolina
Moores Creek National Battlefield; North Carolina
Wright Brothers National Memorial; North Carolina
Fort Union Trading Post National Historic Site; North Dakota, Montana
Knife River Indian Villages National Historic Site; North Dakota
Theodore Roosevelt National Park; North Dakota
Charles Young Buffalo Soldiers National Monument; Ohio
Cuyahoga Valley National Park; Ohio
Dayton Aviation Heritage National Historical Park; Ohio
First Ladies National Historic Site; Ohio
Hopewell Culture National Historical Park; Ohio
James A. Garfield National Historic Site; Ohio
Perry's Victory and International Peace Memorial; Ohio
William Howard Taft National Historic Site; Ohio
Chickasaw National Recreation Area; Oklahoma
Washita Battlefield National Historic Site; Oklahoma
Crater Lake National Park; Oregon
Lewis and Clark National Historical Park; Oregon, Washington
John Day Fossil Beds National Monument; Oregon
Oregon Caves National Monument and Preserve; Oregon
Allegheny Portage Railroad National Historic Site; Pennsylvania
Edgar Allan Poe National Historic Site; Pennsylvania
Eisenhower National Historic Site; Pennsylvania
Flight 93 National Memorial; Pennsylvania
Fort Necessity National Battlefield; Pennsylvania
Friendship Hill National Historic Site; Pennsylvania
Gettysburg National Military Park; Pennsylvania
Hopewell Furnace National Historic Site; Pennsylvania
Independence National Historical Park; Pennsylvania
Johnstown Flood National Memorial; Pennsylvania
Middle Delaware National Scenic River; Pennsylvania
Steamtown National Historic Site; Pennsylvania
Thaddeus Kosciuszko National Memorial; Pennsylvania
Upper Delaware Scenic and Recreational River; Pennsylvania
Valley Forge National Historical Park; Pennsylvania
San Juan National Historic Site; Puerto Rico
Blackstone River Valley National Historical Park; Rhode Island, Massachusetts
Roger Williams National Memorial; Rhode Island
Charles Pinckney National Historic Site; South Carolina
Congaree National Park; South
Carolina
Cowpens National Battlefield; South
Carolina
Fort Sumter and Fort Moultrie National Historical Park; South Carolina
Kings Mountain National Military Park; South Carolina
Ninety Six National Historic Site; South Carolina
Reconstruction Era National Historical Park; South Carolina
Badlands National Park; South
Dakota
Jewel Cave National Monument; South
Dakota
Minuteman Missile National Historic Site; South Dakota
Mount Rushmore National Memorial; South Dakota
Wind Cave National Park; South
Dakota
Andrew Johnson National Historic Site; Tennessee
Big South Fork National River and Recreation Area; Tennessee, Kentucky
Fort Donelson National Battlefield; Tennessee, Kentucky
Great Smoky Mountains National Park; Tennessee, North Carolina
Obed Wild and Scenic River; Tennessee
Shiloh National Military Park; Tennessee, Mississippi
Stones River National Battlefield; Tennessee
Alibates Flint Quarries National Monument; Texas
Amistad National Recreation Area; Texas
Big Bend National Park; Texas
Big Thicket National Preserve; Texas
Blackwell School National Historic Site; Texas
Chamizal National Memorial; Texas
Fort Davis National Historic Site; Texas
Guadalupe Mountains National Park; Texas
Lake Meredith National Recreation Area; Texas
Lyndon B. Johnson National Historical Park; Texas
Padre Island National Seashore; Texas
Palo Alto Battlefield National Historical Park; Texas
Rio Grande Wild and Scenic River; Texas
San Antonio Missions National Historical Park; Texas
Waco Mammoth National Monument; Texas
Arches National Park; Utah
Bryce Canyon National Park; Utah
Canyonlands National Park; Utah
Capitol Reef National Park; Utah
Cedar Breaks National Monument; Utah
Golden Spike National Historical Park; Utah
Natural Bridges National Monument; Utah
Rainbow Bridge National Monument; Utah
Timpanogos Cave National Monument; Utah
Zion National Park; Utah
Marsh-Billings-Rockefeller National Historical Park; Vermont
Buck Island Reef National Monument; Virgin Islands
Christiansted National Historic Site; Virgin Islands
Salt River Bay National Historical Park and Ecological
Preserve; Virgin Islands
Virgin Islands National Park; Virgin
Islands
Virgin Islands Coral Reef National Monument; Virgin Islands
Appomattox Court House National Historical Park; Virginia
Arlington House, The Robert E. Lee Memorial; Virginia
Booker T. Washington National Monument; Virginia
Cedar Creek and Belle Grove National Historical Park; Virginia
Colonial National Historical Park; Virginia
Fort Monroe National Monument; Virginia
Fredericksburg and Spotsylvania National Military Park; Virginia
George Washington Birthplace National Monument; Virginia
George Washington Memorial Parkway; Virginia, Maryland, Washington DC
Maggie L. Walker National Historic Site; Virginia
Manassas National Battlefield Park; Virginia
Petersburg National Battlefield; Virginia
Prince William Forest Park; Virginia
Richmond National Battlefield Park; Virginia
Shenandoah National Park; Virginia
Wolf Trap National Park for the Performing Arts; Virginia
Ebey's Landing National Historical Reserve; Washington
Fort Vancouver National Historic Site; Washington, Oregon
Lake Chelan National Recreation Area; Washington
Lake Roosevelt National Recreation Area; Washington
Mount Rainier National Park; Washington
North Cascades National Park; Washington
Olympic National Park; Washington
Ross Lake National Recreation Area; Washington
San Juan Island National Historical Park; Washington
Whitman Mission National Historic Site; Washington
Belmont-Paul Women's Equality National Monument; Washington DC
Carter G. Woodson Home National Historic Site; Washington DC
Constitution Gardens; Washington
DC
Dwight D. Eisenhower Memorial; Washington DC
Ford's Theatre National Historic Site; Washington D.C.
Franklin D. Roosevelt Memorial; Washington D.C.
Frederick Douglass National Historic Site; Washington D.C.
Jefferson Memorial; Washington
D.C.
Korean War Veterans Memorial; Washington
D.C.
Lincoln Memorial; Washington
D.C.
Lyndon Baines Johnson Memorial Grove on the Potomac; Washington D.C.
Martin Luther King, Jr. Memorial; Washington D.C.
Mary McLeod Bethune Council House National Historic Site; Washington DC
National Capital Parks-East; Washington
DC
National Mall and Memorial Parks; Washington DC
Pennsylvania Avenue National Historic Site; Washington D.C.
Rock Creek Park; Washington
D.C.
Theodore Roosevelt Island; Washington
DC
Vietnam Veterans Memorial; Washington
D.C.
Washington Monument; Washington
D.C.
White House and President's Park; Washington D.C.
World War I Memorial; Washington
DC
World War II Memorial; Washington
DC
Bluestone National Scenic River; West Virginia
Gauley River National Recreation Area; West Virginia
Harpers Ferry National Historical Park; West Virginia
New River Gorge National Park and Preserve; West Virginia
Apostle Islands National Lakeshore; Wisconsin
Ice Age National Scenic Trail; Wisconsin
Saint Croix National Scenic Riverway; Wisconsin, Minnesota
Devils Tower National Monument; Wyoming
Fort Laramie National Historic Site; Wyoming
Fossil Butte National Monument; Wyoming
Grand Teton National Park; Wyoming
John D. Rockefeller Jr. Memorial Parkway; Wyoming
Yellowstone National Park; Wyoming, Idaho, Montana
