 Sapporo was selected to be the host of the 5th Winter Olympics scheduled on February 3 to 12, 1940, but Japan had to give the Games back to the IOC, after the Second Sino-Japanese War broke out in 1937.In 1972, Sapporo hosted the 11th Winter Olympics.Some structures built for Olympic events remain in use today, including the ski jumps at Miyanomori and Okurayama.