| Name |
Location |
Visited |
Photo |
| Acadia National Park |
Maine |
|
|
| National Park of American Samoa |
American Samoa |
|
|
| Arches National Park |
Utah |
|
|
| Badlands National Park |
South Dakota |
May 29, 2006 |
 |
| Big Bend National Park |
Texas |
|
|
| Biscayne National Park |
Florida |
|
|
| Black Canyon of the Gunnison National Park |
Colorado |
|
|
| Bryce Canyon National Park |
Utah |
|
|
| Canyonlands National Park |
Utah |
|
|
| Capitol Reef National Park |
Utah |
|
|
| Carlsbad Caverns National Park |
New Mexico |
|
|
| Channel Islands National Park |
California |
|
|
| Congaree National Park |
South Carolina |
|
|
| Crater Lake National Park |
Oregon |
July 28, 2007 |
 |
|
|
| Cuyahoga Valley National Park |
Ohio |
|
|
| Death Valley National Park |
California, Nevada |
|
|
| Denali National Park and Preserve |
Alaska |
|
|
| Dry Tortugas National Park |
Florida |
|
|
| Everglades National Park |
Florida |
|
|
| Gates of the Arctic National Park and Preserve |
Alaska |
|
|
| Glacier National Park |
Montana |
May 31, 2006 |
 |
| Glacier Bay National Park and Preserve |
Alaska |
|
|
| Grand Canyon National Park |
Arizona |
October 21, 2006 (sort-of) |
 |
| Grand Teton National Park |
Wyoming |
| Great Basin National Park |
Nevada |
|
|
| Great Sand Dunes National Park and Preserve |
Colorado |
|
|
| Great Smoky Mountains National Park |
North Carolina, Tennessee |
January 1, 2008 |
 |
| Guadalupe Mountains National Park |
Texas |
|
|
| Haleakala National Park |
Hawaii |
|
|
| Hawaii Volcanoes National Park |
Hawaii |
|
|
| Hot Springs National Park |
Arkansas |
|
|
| Isle Royale National Park |
Michigan |
|
|
| Joshua Tree National Park |
California |
|
|
| Katmai National Park and Preserve |
Alaska |
|
|
| Kenai Fjords National Park |
Alaska |
|
|
| Kings Canyon National Park |
California |
|
|
| Kobuk Valley National Park |
Alaska |
|
|
| Lake Clark National Park and Preserve |
Alaska |
|
|
| Lassen Volcanic National Park |
California |
|
|
| Mammoth Cave National Park |
Kentucky |
December 31, 2007 |
 |
| Mesa Verde National Park |
Colorado |
|
|
| Mount Rainier National Park |
Washington |
|
|
| North Cascades National Park |
Washington |
|
|
| Olympic National Park |
Washington |
June 2, 2006 |
 |
| Petrified Forest National Park |
Arizona |
|
|
| Redwood National and State Parks |
California |
July 29, 2007 |
 |
| Rocky Mountain National Park |
Colorado |
|
|
| Saguaro National Park |
Arizona |
|
|
| Sequoia National Park |
California |
August 21, 1999 |
 |
| Shenandoah National Park |
Virginia |
|
|
| Theodore Roosevelt National Park |
North Dakota |
|
|
| Virgin Islands National Park |
U.S. Virgin Islands |
|
|
| Voyageurs National Park |
Minnesota |
|
|
| Wind Cave National Park |
South Dakota |
|
|
| Wrangell-St. Elias National Park and Preserve |
Alaska |
|
|
| Yellowstone National Park |
Idaho, Montana, Wyoming |
May 30, 2006 |
 |
| Yosemite National Park |
California |
August 4, 2007 |
 |
| Zion National Park |
Utah |
|
|