Going-to-the-Sun Road (Montana)

Fifty miles through Glacier National Park, Going-to-the-Sun Road took 11 years to build and crosses the Continental Divide at Logan Pass (6,646 feet), carving through solid rock to showcase glacial lakes so turquoise they reflect 90% of sunlight. Open only mid-June to mid-October, each drive feels earned; visitors average 4 hours for the full loop. At mile 23, the Weeping Wall cascades over the road at 200 gallons per minute during spring melt. Mountain goats perch at 7,000 feet, observing 1,500 annual visitors per day. Its compact intensity outperforms #1's 655-mile coast in density of landmarks per mile, packing 15 named peaks into a single hour.