Isle Royale National Park
Near Lake Michigan, Isle Royale National Park was created on April 3, 1940.
Joshua Tree National Park
Found near Twentynine Palms, California, Joshua Tree National Park was established on October 31, 1994.
Katmai National Park and Preserve
To preserve the area destroyed by the Katmai and surrounding volcanos, the Katmai National Park and Preserve in Alaska was created in 1918.
Kenai Fjords National Park
The Alaska National Interest Lands Conservation Act established Kenai Fjords National Park on December 2, 1980.
Kings Canyon National Parks
Kings Canyon National Park, established in March 4, 1940, lies east of Fresno, California.
Kobuk Valley National Park
North of the Arctic Circle, the Kobuk Valley National Park was established on December 2, 1980 to preserve a vast ecosystem.
Lake Clark National Park and Preserve
Lake Clark National Park and Preserve in Alaska was established in 1980.
Lassen Volcanic National Park
Lassen Volcanic National Park in northeastern California was originally established as two National Monuments in 1907 by President Theodore Roosevelt.
Mammoth Cave National Park
Mammoth Cave National Park was established on July 1, 1941 to preserve the cave system and scenic river valleys in south central Kentucky.
Mesa Verde National Park
In Montezuma County, Colorado, some of the best preserved Ancestral Puebloan archeological sites in the United States are found at Mesa Verde National Park, which was established on June 29, 1906, by President Theodore Roosevelt.
Live Science newsletter
Stay up to date on the latest science news by signing up for our Essentials newsletter.