Visitors who travel this extraordinary byway experience the visual trifecta of Montana, Wyoming and Yellowstone Park, home to the Absaroka and Beartooth mountains. The windy, cliff-hugging 68-mile stretch introduces road explorers to one of the most diverse ecosystems accessible by auto. It's also the highest elevation highway in the Northern Rockies. Stunningly beautiful, the "All-American Road" showcases wide, high alpine plateaus, painted with patches of ice blue glacial lakes, forested valleys, waterfalls and wildlife. Plan for many stops so the driver can take in the long views!