Yellowstone National Park is one of America's beloved national parks, sitting within the volcanic northwest corner of Wyoming, with a subterranean network of lava and heat that bursts in the form of geysers, muddy paint pots, and hot springs on the surface. But all this heat coming from below doesn't exactly keep the skies from snowing during the winter months, and when it does, Yellowstone becomes a picturesque winter wonderland of snowy hills and frozen rivers. In fact, many people believe the park is at its best during the winter season, from December to March, when the bus tour crowds have died down and it's still accessible from the northern border town of Cooke City, MT. Lodging is even available during the winter, albeit with limited vacancy.
Yellowstone's natural attractions may be great during the spring and summer, but the visuals of eruptions of sulfuric steam and water amidst a canvas of white can only be seen during the winter. And while there are animals that are easier to see during the winter - the gray wolf, for example - the year-round sightings of elk and bison are different when they are surrounded by ice and snow.