Yellowstone National Park is the largest national park in the Rocky Mountains, covering over 3,400 square miles across Wyoming, Montana, and Idaho.

Established in 1872, it was the first national park in the United States and is renowned for its geothermal features, including geysers like Old Faithful, hot springs, and mud pots. Yellowstone is also home to diverse wildlife, including bison, elk, and grizzly bears, making it a prime destination for nature lovers and outdoor enthusiasts. The park's stunning landscapes, from volcanic plateaus to deep canyons, offer countless opportunities for hiking, camping, and photography, showcasing the beauty of the Rockies.