Alaska, northwest of Canada, is the largest and most sparsely populated U.S. state. It's known for its dramatic, diverse terrain of wide-open spaces, mountains and forests, with abundant wildlife and many small towns. It’s a destination for outdoor activities including skiing, mountain biking and kayaking. Massive Denali National Park, home to Mt. McKinley (aka Denali), North America’s highest peak, is a site of animal-viewing tours.