Beartooth Highway (Montana/Wyoming)

Charles Kuralt called it "the most beautiful drive in America" and he wasn't being hyperbolic. Sixty-eight miles of switchbacks climbing to 10,947 feet at Beartooth Pass — the highest drivable point in Montana. You'll pass through alpine tundra, snowfields in July, and scenery that makes the Swiss Alps look like a warm-up act. The road connects Red Lodge, Montana, to Yellowstone's northeast entrance. Bring a jacket. At nearly 11,000 feet, summer is a suggestion.