Yellowstone, a natural wonder
For outdoor fun, natural beauty and history, it's tough to beat America's first national park, Yellowstone. Established in 1872 and located in Wyoming, Montana and Idaho, the park hosts a large variety of wildlife including grizzly bears, wolves, bison and elk. Yellowstone Lake is the largest high-altitude lake in America.
See also: 10 must-see parks less-traveled.
What sets Yellowstone apart from the other parks is its geological magnificence — it is the veritable mother lode, if you will, of rock and thermal attractions, including, of course, the world's most popular geyser, Old Faithful. Also look for hot springs, petrified forests and the Grand Canyon of the Yellowstone, a 1,000-foot-deep, 24-mile-long gorge carved in yellows and reds.
See these curiosities and others on day hikes such as Geyser Hill Loop and Fountain Paint Pot Trail. The popular Lonestar Geyser Trail accommodates hikers and cyclists, follows the Firehole River and doubles as a cross-country ski trail in winter. Fish for cutthroat and other trout species on the Yellowstone River.
Take in all this beauty via Yellowstone's 12 campgrounds or The Old Faithful Inn.