Yellowstone National Park spans parts of Wyoming, Montana, and Idaho, covering over 2 million acres, making it larger than Rhode Island and Delaware combined. The park features geothermal features like geysers and hot springs, including Old Faithful which erupts frequently. It is also home to diverse wildlife like bears, bison, wolves, and over 1,350 plant species. Visitors can stay in cabins or campgrounds and have opportunities to view the parks geysers, canyons, and natural beauty while being prepared for the high altitude and unpredictable weather.