However, it can also be a day to explore the National Parks in the country and today Americans can explore parks for free, as it’s one of five days in 2020 when national parks don’t charge an entrance fee. The other days to look out for are:

April 18: First day of National Park WeekAugust 25: National Park Service BirthdaySeptember 26: National Public Lands DayNovember 11: Veterans Day

There are more than 400 national parks, according to the National Park Service, which are available to everyone, every day. The entrance fee waiver for fee-free days does not cover amenity or user fees for activities such as camping, boat launches, transportation, or special tours, so bear this in mind when visiting one.

According to the National Park Service, nature lovers can buy an annual $80 America the Beautiful National Parks and Federal Recreational Lands Pass. This pass allows unlimited entrance to more than 2,000 federal recreation areas, including all national parks that normally charge an entrance fee. There are also free or discounted passes available for senior citizens, current members of the military, families of fourth-grade students, and disabled citizens, according to the website.

Which National Parks are free on Martin Luther King Jr. Day?

The following National Parks, which normally charge an admission fee, are free today:

Alaska

Denali National Park & Preserve

Arizona

Glen Canyon National Recreation AreaGrand Canyon National ParkLake Mead National Recreation AreaMontezuma Castle National MonumentOrgan Pipe Cactus National MonumentPetrified Forest National ParkPipe Spring National MonumentSaguaro National ParkSunset Crater Volcano National MonumentTonto National MonumentTumacácori National Historical ParkTuzigoot National MonumentWalnut Canyon National MonumentWupatki National Monument

Arkansas

Fort Smith National Historic SitePea Ridge National Military Park

California

Cabrillo National MonumentDeath Valley National ParkJoshua Tree National ParkLassen Volcanic National ParkLava Beds National MonumentMuir Woods National MonumentPinnacles National ParkSan Francisco Maritime National Historical ParkSequoia & Kings Canyon National ParksWhiskeytown National Recreation AreaYosemite National Park

Colorado

Black Canyon of the Gunnison National ParkColorado National MonumentDinosaur National MonumentFlorissant Fossil Beds National MonumentGreat Sand Dunes National Park & PreserveHovenweep National MonumentMesa Verde National ParkRocky Mountain National Park

Florida

Canaveral National SeashoreCastillo de San Marcos National MonumentDry Tortugas National ParkEverglades National ParkGulf Islands National Seashore

Georgia

Chattahoochee River National Recreation AreaChickamauga and Chattanooga National Military ParkCumberland Island National SeashoreFort Pulaski National MonumentKennesaw Mountain National Battlefield Park

Hawaii

Haleakalā National ParkHawai’i Volcanoes National ParkPu’uhonua o Hōnaunau National Historical Park

Idaho

Craters of the Moon National Monument & PreserveYellowstone National Park

Maine

Acadia National Park

Maryland

Antietam National BattlefieldAssateague Island National SeashoreChesapeake and Ohio Canal National Historical ParkFort McHenry National Monument and Historic ShrineFort Washington ParkHarpers Ferry National Historical Park

Massachusetts

Adams National Historical ParkCape Cod National Seashore

Michigan

Isle Royale National ParkSleeping Bear Dunes National Lakeshore

Minnesota

Pipestone National Monument

Mississippi

Gulf Islands National SeashoreVicksburg National Military Park

Missouri

Gateway Arch National Park (formerly Jefferson National Expansion Memorial)Wilson’s Creek National Battlefield

Montana

Glacier National ParkLittle Bighorn Battlefield National MonumentYellowstone National Park

Nevada

Death Valley National ParkLake Mead National Recreation Area

New Hampshire

Saint-Gaudens National Historical Park

New Jersey

Thomas Edison National Historical Park

New Mexico

Bandelier National MonumentCapulin Volcano National MonumentCarlsbad Caverns National ParkChaco Culture National Historical ParkValles Caldera National PreserveWhite Sands National Monument

New York

Eleanor Roosevelt National Historic SiteHome of Franklin D. Roosevelt National Historic SiteSagamore Hill National Historic SiteVanderbilt Mansion National Historic Site

North Carolina

Wright Brothers National Memorial

North Dakota

Theodore Roosevelt National Park

Ohio

James A. Garfield National Historic SitePerry’s Victory & International Peace Memorial

Oklahoma

Fort Smith National Historic Site

Oregon

Crater Lake National ParkLewis and Clark National Historical Park

Puerto Rico

San Juan National Historic Site

South Carolina

Fort Sumter and Fort Moultrie National Historical Park

South Dakota

Badlands National Park

Tennessee

Chickamauga and Chattanooga National Military Park

Texas

Big Bend National ParkFort Davis National Historic SiteGuadalupe Mountains National ParkPadre Island National Seashore

Utah

Arches National ParkBryce Canyon National ParkCanyonlands National ParkCapitol Reef National ParkCedar Breaks National MonumentDinosaur National MonumentGlen Canyon National Recreation AreaGolden Spike National Historical ParkHovenweep National MonumentNatural Bridges National MonumentZion National Park

Virgin Islands

Christiansted National Historic Site

Virginia

Assateague Island National SeashoreColonial National Historical ParkGeorge Washington Memorial Parkway’s Great Falls ParkHarpers Ferry National Historical ParkPrince William Forest ParkShenandoah National Park

Washington

Fort Vancouver National Historic SiteLewis and Clark National Historical ParkMount Rainier National ParkOlympic National Park

West Virginia

Harpers Ferry National Historical Park

Wyoming

Devils Tower National MonumentGrand Teton National ParkYellowstone National Park