Yellowstone National Park is the world's first National Park, also the largest in the United States. Yellowstone was designated the world's first national park on March 1, 1872, with the area remaining largely in the same natural state as it was more than 123 years ago.
Yellowstone contains more than 2.2 million acres of steaming geysers, thundering waterfalls, crystalline lakes, and panoramic vistas. The world's most extensive area of geyser activity, harboring more than 10,000 thermal features. Yellowstone is the greatest wildlife sanctuary in the United States, encompassing 3,472 square miles of wondrous beauty.
Every visitor is welcome to share the natural phenomena, and enjoy it's pristine loveliness, so generously lavished over mountains, forests, meadows, streams, and lakes.
Three of Yellowstone National Park's five entrances are located in Montana. Enter the park from Gardiner on US Highway 89, Cooke City/Silver Gate via the Beartooth Highway (US 212), or West Yellowstone at the junction of US 191/287 and 20.