Sun Valley, mountain resort city (1990 pop. 938), alt. c.6,000 ft (1,830 m), Blaine co., S central Idaho; inc. 1967. It is a popular year-round resort with both winter and summer sports. It was founded as a ski resort in 1936 by W. Averell Harriman, then board chairman of the Union Pacific RR. The railroad purchased the land and built the resort to attract more passenger traffic to the West; it was the first ski resort to be built as a destination resort. In 1964 it was sold to a land-development corporation; in 1967, Bill Janss, a former Olympic skier, became sole owner. The Hemingway Memorial, on a bluff overlooking a swift-flowing trout stream, was dedicated in 1966.