Yellowstone National Park is a national park located in the U.S. states of Wyoming, Montana, and Idaho. It was established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872.[4][5] Yellowstone was the first National Park in the U.S. and is also widely held to be the first national park in the world.[6] The park is known for its wildlife and its many geothermal features, especially Old Faithful geyser, one of its most popular features.[7] It has many types of ecosystems, but the subalpine forest is the most abundant. It is part of the South Central Rockies forests ecoregion.
Yellowstone National Park
IUCN category II (national park)
YellowstonefallJUN05.JPG
Grand Canyon of the Yellowstone
Map showing the location of Yellowstone National Park Map showing the location of Yellowstone National Park
Location of Yellowstone National Park
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Location
United States
Park County, Wyoming
Teton County, Wyoming
Gallatin County, Montana
Park County, Montana
Fremont County, Idaho
Coordinates 44°36′N 110°30′W
Area 2,219,791 acres (8,983.18 km2)[1]
Established March 1, 1872
Visitors 4,257,177 (in 2016)[2]
Governing body U.S. National Park Service
Website Official website
UNESCO World Heritage Site
Type Natural
Criteria vii, viii, ix, x
Designated 1978 (2nd session)
Reference no. 28[3]
Region The Americas
Endangered 1995–2003