Access to The S S Klondike National Historic Site, Whitehorse, Yukon Visitor information center. North side of highway. The S.S. Klondike was first built in 1929 and sank in 1936. It was rebuilt and launched in the spring of 1937 as the S.S. Klondike II, the largest and last of the sternwheelers. This Canadian National Historic Site pays tribute to an era of riverboat transportation. Tours are available, check in at the visitor information center. The Alaska Highway