Yellowstone National Park is the first national park in the world and one of the most famous natural landscapes on Earth. Established in 1872, Yellowstone protects a massive geothermal landscape filled with geysers, hot springs, mud pots, and fumaroles. The park is also home to abundant wildlife, dramatic mountain scenery, waterfalls, and the vast Yellowstone Caldera—one of the largest volcanic systems on the planet.