Often considered America's last frontier, Alaska is an exciting destination for the adventure traveler. In addition to the glaciers of the Inside Passage that are so familiar to cruise ship passengers, Juneau and the Southeast Panhandle is home to Sitka National Historic Park and its many recreational activities, as well as the town of Skagway, staging point for the Klondike Gold Rush. Visit the fascinating, isolated Aleutian Islands and the communities of King Salmon and Katmai National Park and Preserve on the Alaska Peninsula. Central Alaska has the world famous Denali National Park, and it is linked by one of the world's great scenic railroads to the cities of Anchorage, the state's main commercial center and home to half of its residents, and Fairbanks, situated at the geographical center of Alaska and a major supply point for the lucrative oil industry.