Yellowstone National Park

One of the world's most active hydrothermal zones, Yellowstone is known for its wildlife, which includes bison, which are present in large numbers throughout the park, elk, wolves, bears, moose, and more. The park is home to numerous geysers, including the most well-known on Earth, Old Faithful, as well as boiling hot springs in a variety of vivid colors, mudpots, and travertine terraces.

Additionally, it's a fantastic location for fly-fishing on world-class trout rivers that meander through verdant open spaces backed by majestic mountains, as well as for viewing magnificent waterfalls like the thundering Yellowstone Falls, which is located in the vivid "Grand Canyon of Yellowstone," taking picnics by glistening lakes, and even going to interesting museums. Just be patient because there are often backups due to the park's animals, who frequently approach or are directly on the roads.

Spend some time in wildlife hotspots like Lamar and Hayden valleys. Though you can frequently see some animals in Yellowstone throughout the day, such as bison herds, dawn and twilight are considered the best times for wildlife viewing.

• Location: Wyoming