It is home to numerous animals you probably don't see at home, including buffalo, moose, elk, bear, antelope, mountain goats, marmots and pikas. My personal favorite area is the Porcelain Basin in Norris, where you walk on wooden walkways among cauldrons, whirligigs, and fumaroles all bubbling up through a multicolored liquid landscape. The best viewing spot for Old Faithful is the second story porch of the Old Faithful Inn. The Inn itself is an example of superb craftsmanship and architecture using natural materials. Yellowstone is also a spectacular display of the way the land has regenerated vegetation following the 1988 fires, which burned about half the park.
Most areas appear to have recovered well, and yet there are still more open vistas than in the past.
For more information than we can include here, visit the park's website or the American Park Network's site. The aroma of the trees at Jenny Lake is unforgettable. There are first-class accommodations in the park, and the city of Jackson, Wyoming is nearby. There are interesting park websites that the National Park Service and the American Park Network have put together. Visit them and see.