Acadia National Park - a national park in Maine showing marine erosion and glaciation; includes seashore and also the highest point on the Atlantic coast

Arches National Park - a national park in Utah including mountains and the Colorado River gorge and huge rock formations caused by erosion

Badlands National Park - a national park in South Dakota having multicolored peaks and spires resulting from erosion; fossil sites

Big Bend National Park - a large national park in Texas featuring mountains and desert and canyons and wildlife

Biscayne National Park - a national park in Florida having underwater coral reefs and marine life

Bryce Canyon National Park - a national park in Utah having multicolored rock erosions

Canyonlands National Park - a national park in Utah having rock formations and ancient cliff dwellings; canyons of the Green River and the Colorado River

Capitol Reef National Park - a national park in Utah having colorful rock formations and desert plants and wildlife

Carlsbad Caverns National Park - a national park in New Mexico featuring what is probably the world's largest cavern with spectacular underground formations

Channel Islands National Park - a national park in California featuring sea birds and marine life

Crater Lake National Park - a national park in Oregon having the deepest lake in the United States in the crater of an extinct volcano

Denali National Park - a large national park in Alaska having peaks of the Alaska Range (including Mount McKinley) and the huge Denali fault

Everglades National Park - a national park in Florida containing an immense subtropical wilderness with mangrove swamps and rare birds and wild animals

Gates of the Arctic National Park - a large national park in Alaska featuring the Great Mendenhall Glacier

Grand Canyon National Park - a national park in Arizona including the mile deep canyon of the Colorado River which shows geologic features and fossil plants and animals

Grand Teton National Park - a national park in Wyoming featuring mountains

Great Smoky Mountains National Park - a national park in Tennessee and North Carolina that includes the highest mountain in the eastern United States

Guadalupe Mountains National Park - a national park in Texas that has the highest point in Texas; includes desert wilderness and the ancient Apache hunting grounds

Haleakala National Park - a national park in Hawaii including a dormant volcano

Hawaii Volcanoes National Park - a national park in Hawaii featuring active volcanoes

Hot Springs National Park - a national park in Arkansas featuring ancient hot springs; bathing is said to have therapeutic effects

Isle Royal National Park - a national park on an island in Michigan; includes prehistoric iron mines

Katmai National Park - a national park in Alaska featuring mountains

Kenai Fjords National Park - a national park in Alaska having mountains and whale watching and ancient Indian copper mines

Kings Canyon National Park - a national park in California that has giant sequoia trees and alpine lakes and glaciers

Kobuk Valley National Park - a national park in Alaska having mountains and forests and tundra and sand dunes and archeological sites

Lake Clark National Park - a national park in Alaska having Eskimo and Athapaskan archeological sites

Lassen Volcanic National Park - a national park in California having mountains and volcanic lakes and hot springs

Mammoth Cave National Park - a national park in Kentucky having a large cavern and an underground river

Mesa Verde National Park - a national park in Colorado containing prehistoric cliff dwellings; semiarid landscape

Mount Ranier National Park - a national park in Washington having mountain terrain featuring glaciers and alpine lakes and streams and swamps

North Cascades National Park - a national park in Washington that is an alpine wilderness area featuring gold rush and logging campsites

Olympic National Park - a national park in Washington having rain forests of giant evergreens

Petrified Forest National Park - a national park in Arizona having the world's largest collection of petrified coniferous trees