Where Earth Comes Alive
Established in 1872 as the world's first national park, Yellowstone protects 2.2 million acres of geothermal wonders, wildlife habitat, and dramatic landscapes. The park features over half of the world's geothermal features, including the iconic Old Faithful geyser.
Beyond its famous geysers, the park is home to diverse wildlife including grizzly bears, wolves, and the largest wild bison herd in North America. The Grand Canyon of the Yellowstone and vast wilderness areas showcase the park's dramatic geological history.
Wyoming, Montana, Idaho
1872
2.2 million acres
~4 million
500+
May to October
Extreme variations. Check conditions.
Multiple options. View accommodations.
Keep safe distance. Follow guidelines.
Personal vehicle or tours. Seasonal roads.
Many accessible facilities. View the accessibility guide.
Five entrance stations.
The park is open year-round. Summer is busiest; winter offers unique experiences.
Multiple visitor centers provide orientation. Ranger programs offered year-round.
Entrance fees required. Advance reservations recommended. Wildlife and thermal area safety essential.