Immense beyond imagination, Alaska covers more territory than Texas, California, and Montana combined. Wide swaths of the 49th state—aptly nicknamed the “Last Frontier”—are untamed and extraordinarily scenic, inspiring larger-than-life adventures like dog sledding across the face of a glacier and basking in the glow of the northern lights. To explore Alaska’s wildest spaces—such as, the eight national parks and North America’s highest peak, 20,310-foot Denali—travel by bush plane, train, and boat.