Alaska's defining feature is the sheer magnitude of the wild areas, and by their very nature they are difficult to visit. Denali National Park comes into its own with a 90-mile road running right through the heart of its six million acres.

Everyone hopes to catch a glimpse of North America's loftiest peak, Mount McKinley. Known to locals simply as Denali, its 20,320-foot summit lords it over the low-lying tundra presenting a stunningly impressive 18,000-foot face.