Known as America's Last Frontier, Alaska magnetizes travelers with untamed wilderness and the promise of solitude. A region of extremes, Alaska swings between warm summers and demanding winters (when the Yukon River freezes solid); from bustling port cities to outdoor expanses. Fairbanks serves as a gateway to Chena Hot Springs and the Arctic Circle's Northern Lights, while cruises past abundant marine wildlife in Kenai Fjords National Park are best accessed from Seward. Dogsled and pan for gold on the Skagway section of the Yukon River; go white-water rafting on rapids that flow from the Mendenhall Glacier; soar over Denali National Park on a flightseeing tour; or feast on salmon and enjoy easy access to Mt. Roberts from Juneau's historic downtown. If you're looking to cover the highlights of the vast state, take the scenic Alaska Railroad route to popular visitor stops such as Anchorage, Talkeetna, and Whittier, or delve into Gold Rush-era history on a journey to White Pass Summit. At Ketchikan's zipline adventure park, kids and adults alike will love flying over the Alaskan rain forest and observing black bears. With opportunity for adventure at every turn, you're sure to submit to the call of the wild during your time in Alaska.