Wyoming National Park is the first national park in the United States, and it is also known as Yellowstone. It is located primarily in Wyoming, but also extends into Montana and Idaho. The park is known for its geothermal features, including the famous Old Faithful geyser. It is home to a variety of wildlife, including grizzly bears, wolves, bison, and elk. It is also home to a variety of plants, including wildflowers, trees, and grasses.