What is the name of the first national park established in the United States?

Yellowstone National Park was the first national park established in the United States.

President Ulysses S. Grant signed the Yellowstone National Park Protection Act on March 1, 1872. The law set aside more than two million acres in what are now Wyoming, Montana, and Idaho “for the benefit and enjoyment of the people.” Yellowstone’s volcanic landscapes, geysers, hot springs, lakes, and wildlife helped inspire the national-park idea.

Yellowstone is especially famous for Old Faithful, although the geyser is not the park’s only major attraction. The park sits over a large volcanic system and contains one of the world’s largest petrified forests, extensive geothermal areas, and important habitats for bison, elk, bears, and wolves.

A frequent mistake is identifying Yosemite as the first national park. Yosemite became a national park in 1890, eighteen years after Yellowstone. The United States later developed the National Park Service in 1916 to manage Yellowstone and other federally protected sites.