The White Pass & Yukon Route is a scenic railway that traverses the rugged terrain of Alaska and the Yukon. The railway was built in 1898 as a link between the port of Skagway, Alaska, and Whitehorse, Yukon, and is now a popular tourist attraction.
From Wikipedia
The White Pass and Yukon Route is a Canadian and U.S. Class III 3 ft narrow-gauge railroad linking the port of Skagway, Alaska, with Whitehorse, the capital of Yukon. An isolated system, it has no direct connection to any other railroad. Equipment, freight and passengers are ferried by ship through the Port of Skagway, and via road through a few of the stops along its route.