8Yellowstone National Park, Wyoming, Montana, and Idaho
As the first national park in the world, Yellowstone National Park is a geological wonderland. Home to an array of geothermal features, including Old Faithful, a geyser that erupts approximately every 90 minutes, Yellowstone’s landscapes are marked by hot springs, mud pots, and fumaroles. The park also boasts stunning canyons, such as the Grand Canyon of the Yellowstone, and picturesque waterfalls like Lower Falls. Wildlife abounds in Yellowstone, where visitors can spot bison, elk, wolves, and bears roaming freely. The park’s unique geothermal activity and diverse ecosystems make it a must-see for nature lovers.