History of Yellowstone National Park
- 1872: Through the Yellowstone National Park Protection Act, signed on March 1, 1872, Yellowstone became the United States’ first national park site
- 1916: The National Park Service was created
- 1929: President Hoover signed a bill expanding the park’s boundaries
- 1932: President Hoover added another 7,000 acres to the park
- 1948: Yellowstone reaches 1 million visitors
- 1959: A 7.5-magnitude earthquake strikes west of Yellowstone (resulting in fatalities and damages)
- 1971: Yellowstone first welcomed overnight visitors in winter
- 2018: Yellowstone reinstates endangered species protections for grizzly bears
- 2019: Yellowstone elects first woman as Chief Ranger
- 2021: The NPS expands bike and transit options for all national parks
- 2022: Yellowstone to open Tribal Heritage Center to celebrate and preserve Native peoples’ history in the Yellowstone region (estimated opening in May-September 2022)
What to Do
How to Stay
Yellowstone Birthday Events
- March 1: Wind River Reservation (Eastern Shoshone and Northern Arapaho Tribes) Virtual Gathering and Celebration — this event will commemorate the park’s anniversary while elevating the Tribal community’s voice in conserving and managing Yellowstone
- March 1: National Park Service “150 Years of Yellowstone” commemoration video
- March 1: Discounted admission at the Grizzly & Wolf Discovery Center, West Yellowstone, Mont.
- May 6: Yellowstone National Park Lodges 150th Anniversary Event
- May 19-20: University of Wyoming’s 150th Anniversary of Yellowstone Symposium