
1. Gates of the Arctic National Park and Preserve, Alaska: America's least-visited national park contains no roads or trails. It's a true wilderness experience.

2. National Park of American Samoa: About 8,500 people visited this South Pacific park in 2021. Most visitors will need a passport to travel to American Samoa.

3. Kobuk Valley National Park, Alaska: Caribou migrate through this park in Alaska where there are no roads or campgrounds.

4. North Cascades National Park, Washington: Glacier-capped mountains tower over this alpine landscape where there are more than 400 miles of trails.

5. Lake Clark National Park and Preserve, Alaska: A dense concentration of brown bears lives near Cook Inlet in Lake Clark National Park and Preserve.

6. Katmai National Park and Preserve, Alaska: Bears are also bountiful at Katmai, where visitors gather near Brooks Falls to see them feed on salmon.

7. Isle Royale National Park, Michigan: An isolated archipelago in Lake Superior, Isle Royale boasts 165 miles of trails and more than 30 campgrounds.

8. Wrangell-St. Elias National Park & Preserve, Alaska: America's largest national park, Wrangell-St. Elias encompasses 13.2 million acres -- or about the size of Yellowstone and Yosemite parks and Switzerland combined, the Park Service says.

9. Dry Tortugas National Park, Florida: About 70 miles (113 km) west of Key West, Dry Tortugas is home to one of the nation's largest 19th-century forts, Fort Jefferson.

10. Glacier Bay National Park and Preserve, Alaska: Reid Glacier is one of this park's namesake features. Sea kayaking is a popular way to see the park's spectacular glaciers.

11. Great Basin National Park, Nevada: Mountain peaks meet hot desert valleys here, and the night sky is spectacular over the varied terrain.

12. Congaree National Park, South Carolina: Congaree is home to the largest intact stretch of old-growth, bottomland hardwood forest in the Southeastern United States.

13. Denali National Park and Preserve, Alaska: Denali covers 6 million acres where off-trail hiking is the norm and vehicle access to its sole road is largely limited to buses.

14. Voyageurs National Park, Minnesota: Voyageurs covers 218,055 acres -- 84,000 of which is water. There are more than 500 islands, four large lakes and more than two dozen smaller lakes.

15. Guadalupe Mountains National Park, Texas: More than 80 miles of hiking trails in this expanse of wilderness range from easy desert walks to "Top of Texas" treks.



