Glacier National Park, Montana..
Glacier National Park is a 1,583-sq.-mi. wilderness area in Montana's Rocky Mountains, with glacier-carved peaks and valleys running to the Canadian border. It's crossed by the mountainous Going-to-the-Sun Road. Among more than 700 miles of hiking trails, it has a route to photogenic Hidden Lake. Other activities include backpacking, cycling and camping. Diverse wildlife ranges from mountain goats to grizzly bears.