Photos of Yellowstone National Park, a place of outstanding natural beauty in the states of Wyoming, Montana and Idaho, United States of America. Designated by U.S Congress in 1872, the area is thought to be the first national park in the world. Yellowstone is famous for it's many geysers, stunning mountainous terrain and wide range of wildlife and it's many geysers. The Yellowstone Lake is located on Yellowstone Caldera, America's largest Super Volcano. Yellowstone National Park is a UNESCO world heritage site.