1. Denali National Park and Preserve — Alaska
2. Katmai National Park and Preserve — Alaska
3. Glacier Bay National Park — Alaska
4. Wrangell-St. Elias National Park — Alaska
5. Kobuk Valley National Park — Alaska
6. Kenai Fjords National Park — Alaska
7. Lake Clark National Park — Alaska
8. Gates of the Arctic National Park — Alaska
9. National Park of American Samoa — American Samoa
10. Saguaro National Park — Arizona
11. Petrified Forest National Park — Arizona
12. Grand Canyon National Park — Arizona
13. Hot Springs National Park — Arkansas
14. Joshua Tree National Park — California
15. Death Valley National Park — California
16. Sequoia National Park — California
17. Kings Canyon National Park — California
18. Lassen Volcanic National Park — California
19. Pinnacles National Park — California
20. Redwood National Park — California
21. Channel Islands National Park — California
22. Yosemite National Park — California
23. Rocky Mountain National Park — Colorado
24. Mesa Verde National Park — Colorado
25. Great Sand Dunes National Park and Preserve — Colorado
26. Black Canyon of the Gunnison National Park — Colorado
27. Dry Tortugas National Park — Florida
28. Biscayne National Park — Florida
29. Everglades National Park — Florida
30. Hawaii Volcanoes National Park — Hawaii
31. Haleakalā National Park — Hawaii
32. Mammoth Cave National Park — Kentucky
33. Acadia National Park — Maine
34. Isle Royale National Park — Michigan
35. Voyageurs National Park — Minnesota
36. Glacier National Park — Montana
37. Great Basin National Park — Nevada
38. Carlsbad Caverns National Park — New Mexico
39. Great Smoky Mountains National Park —North Carolina and Tennessee
40. Theodore Roosevelt National Park — North Dakota
41. Cuyahoga Valley National Park — Ohio
42. Crater Lake National Park — Oregon
43. Congaree National Park — South Carolina
44. Badlands National Park — South Dakota
45. Wind Cave National Park — South Dakota
46. Big Bend National Park — Texas
47. Guadalupe Mountains National Park — Texas
48. Virgin Islands National Park — U.S. Virgin Islands
49. Canyonlands National Park — Utah
50. Zion National Park — Utah
51. Capitol Reef National Park — Utah
52. Bryce Canyon National Park — Utah
53. Arches National Park — Utah
54. Shenandoah National Park — Virginia
55. Mount Rainier National Park — Washington
56. Olympic National Park — Washington
57. North Cascades National Park — Washington
58. Grand Teton National Park — Wyoming
59. Yellowstone National Park — Wyoming, Idaho, and Montana
An earlier version of this post misstated that Yellowstone National Park was also partially in Nevada, instead of Montana.