Yellowstone National Park
Yellowstone comes alive in the winter. The park is at its most primal under a blanket of snow; geyser basins steam, bison crash through the powder and ice on an unending search for sustenance, mountaintops shimmer under frosted caps, and thrilling adventure is all but guaranteed. Sleigh rides provide tremendous family fun, cross-country skiing opens up the desolate backcountry, snowmobile and snowcoach expeditions provide entry to the furthest recesses of the park, and a warm meal, a roaring fire, and good company wait for you inside a cozy snow lodge. Yellowstone receives more than three million visitors per year, but only 100,000 come during the winter, which means you're likely to have a big chunk of the park to yourself.