While many visitors to Yellowstone National Park stay in the onsite lodges and campgrounds, plenty of others choose nearby towns as home bases for their national park adventures. Yellowstone's west entrance is located right outside of West Yellowstone, Montana, on Highway 191, but the national park crowds make this town fairly busy. A tranquil alternative is Ashton, Idaho. The town is located just one hour away from the same park entrance, which you can access via Route 20.