1:
1. Yellowstone National Park - Bison roaming freely in their natural habitat.
2. Everglades National Park - Spot alligators in the wild.
3. Denali National Park - Grizzly bears and moose sightings.
2:
4. Grand Teton National Park - Witness majestic elk herds.
5. Great Smoky Mountains National Park - Black bears roaming in the forests.
6. Kenai Fjords National Park - Experience humpback whale sightings.
3:
7. Olympic National Park - Watch bald eagles soar in the sky.
8. Glacier National Park - Mountain goats and bighorn sheep sightings.
9. Redwood National and State Parks - Encounter playful sea otters.
4:
10. Big Sur Coastline - Gray whales migrating along the Pacific coast.
11. San Juan Islands - Orca whales breaching in the Puget Sound.
12. Custer State Park - Bison herds grazing in the grasslands.
5:
13. Great Bear Rainforest - Spirit bears and coastal wolves in British Columbia.
14. Katmai National Park - Brown bears fishing for salmon at Brooks Falls.
15. Katmai National Park - Brown bears fishing for salmon at Brooks Falls.
6:
16. Channel Islands National Park - Swim with sea lions and dolphins.
17. Joshua Tree National Park - Desert tortoises and bighorn sheep.
18. Zion National Park - Desert bighorn sheep climbing steep cliffs.
7:
19. Carlsbad Caverns National Park - Bat flight program at dusk.
20. Grand Canyon National Park - California condors soaring above the canyon.
21. Acadia National Park - Puffins nesting on the rocky cliffs.
8:
22. Everglades National Park - Anhingas and herons in the wetlands.
23. Shenandoah National Park - Black bears and white-tailed deer.
24. Great Sand Dunes National Park - Kit foxes and pronghorn antelope sightings.
9:
25. Rocky Mountain National Park - Elk bugling during the rutting season.
26. Yellowstone National Park - Wolf packs roaming the Lamar Valley.
27. Arches National Park - Golden eagles soaring above the red rock formations.