15. Glacier National Park, Montana
Two thousand lakes, a thousand miles of rivers, thick forests, blustery meadows and awe-inspiring peaks make up one of America’s finest attractions - Montana’s Glacier National Park. A haven for bighorn sheep, mountain goats, black and grizzly bears, wolves and mountain lions, it takes its name from the massive flows of ice that carved these immense valleys 20,000 years ago (today it contains 25 small, retreating glaciers).
Through summer, it’s a glorious place to hike and white-water raft, while winter brings crisp air, icy waterfalls and bountiful snowfall. Magic.