Yellowstone National Park is a protected area located primarily in the U.S. state of Wyoming, but also extends into Montana and Idaho. It was established in 1872 and was the first national park in the United States, as well as the first national park in the world.

The park spans over 2.2 million acres and is home to a diverse range of landscapes, including geysers, hot springs, canyons, forests, and meadows. It is also home to a vast array of wildlife, including bears, wolves, bison, elk, and many other species.

One of the most famous features of Yellowstone is its geyser basins, including the famous Old Faithful Geyser, which erupts every 35-120 minutes. Visitors can also see the Grand Canyon of the Yellowstone, which features the Yellowstone River cutting through colorful rock formations.

Yellowstone is a popular destination for outdoor enthusiasts and nature lovers, offering opportunities for hiking, fishing, camping, and wildlife viewing. The park also provides a unique opportunity to experience the natural beauty and diversity of the American West, and is a must-visit for anyone looking to explore some of the most breathtaking scenery in the country.