William J. Kuhlman expanded the park in 1925. At that time, Geauga Lake built the Big Dipper, the largest wooden roller coaster of its time, long and high. Geauga Lake's Olympic-sized swimming pool was built, and it stayed in operation until the mid-1960s. On Sunday, July 11, 1926, Olympic medalist and Tarzan actor Johnny Weissmuller set a new world record in the 220-yard free style swim in the pool in front of 3,000 spectators. Lake swimming also continued over the coming decades. Many amusement parks at the time had race tracks, dance halls, and sometimes a theater and bowling alley, making them year round attractions. The race track was added in 1931, although it closed in 1969. The theater, dance hall, and bowling alley were also added around the same time. In 1937, the park's 1926 hand-carved Marcus Illions Carousel was added, after having been located in Philadelphia and Birmingham, at a cost of $35,000.