Grand Prismatic Springs, Yellowstone, Wyoming
More than 1,000 miles of backcountry hiking trails throughYellowstonelead travelers to primal areas rich with extraordinary wildlife and steaming, bubbling hot springs. Your chances at spotting an endangered grizzly or elk are pretty good -- the park is home to the largest elk herd in North America and one of two grizzly bear populations. You'll no doubt leave with everlasting images of thegrand sweep of the rugged Teton mountain range and nature's fireworks leaping from the geysers.