8Yellowstone National Park, Wyoming, Montana, and Idaho

America’s first national park, Yellowstone, is a must-see for nature lovers. Spanning three states, Yellowstone is known for its geothermal wonders, including Old Faithful, a geyser that erupts approximately every 90 minutes, and the colorful Grand Prismatic Spring. The park is also home to a diverse array of wildlife, such as bison, elk, bears, and wolves.

In addition to its geothermal attractions, Yellowstone offers opportunities for hiking, fishing, and camping. Visitors can explore the park’s scenic Grand Canyon of the Yellowstone, the Lamar Valley (ideal for wildlife watching), and the stunning Yellowstone Lake.