Yellowstone National Park is one of America's greatest treasures. Every year, millions of visitors like you come to experience Yellowstone's beauty and mystery. They come to wonder at the world's largest collection of geysers and hot springs. They come to catch glimpses of the only wild bison herd that ...

National Park Service The NPS is the federal custodian of Yellowstone National Park. As an agency of the Department of the Interior, the NPS has the responsibility of preserving and protecting the environmental and cultural values of our national parks, protecting the wildlife therein and providing for public use and ...