Yellowstone National Park's nearly 3,500 square miles seep slightly across state borders into Montana and Idaho, but its major attractions are contained in the northwest corner of Wyoming.

Brush up on your knowledge of Yellowstone's geography with this interactive version of National Geographic's Trails Illustrated map Yellowstone National Park MapPlanning a Yellowstone trip?

West Yellowstone is the charming gateway town to Yellowstone National Park. Explore the area in the winter for an outdoor ...