during the 1920s and 1940s. The Cleveland Indians held spring training there from 1923 to 1927 at Henley Field Ball Park. Parks were developed surrounding Lake Mirror, including Barnett Children's Park, Hollis Gardens, and the newest, Allen Kryger Park. The "boom" period went "bust" quickly, and years passed before the city recovered. Part of the re-emergence was due to the arrival of the Detroit Tigers baseball team in 1934 for spring training. The Tigers still train at Lakeland's Joker Marchant Stadium and own the city's Class A Florida State League team, the Lakeland Flying Tigers. In the mid-1930s, the Works Progress Administration built the Lakeland Municipal Airport. In 1938, Florida Southern College President Ludd Spivey invited architect Frank Lloyd Wright to design a "great education temple in Florida." Wright worked on the project for over 20 years as Spivey found ways to fund it and find construction workers during World War II. Wright's original plan called for 18 structures; in total he designed 30, but only 12 were completed. Wright's textile block motif is used extensively on the campus. The concrete blocks he used are in need of restoration. Wright titled the project Child of the Sun, describing his Florida Southern buildings as being "out of the ground, into the light, a child of the sun." It is the largest single-site collection of Frank Lloyd Wright buildings in the world, and attracts 30,000 visitors each year. In 1975, the "Florida Southern Architectural District" was added to the National Register of Historic Places. In 2012, Wright's campus was designated as a National Historic Landmark by the National Park Service. World War II At the beginning of World War II, the Lakeland School of Aeronautics—headquartered at the recently built Lakeland Municipal Airport—became part of a nationwide network of civilian flight schools enjoined for the war effort by the United States Army Air Corps. Between 1940 and 1945, more than 8,000 Army Air Corps and Army Air Forces cadets trained on two-seater Stearman PT-17 and PT-13 biplanes at the school (renamed the Lodwick School of Aeronautics in the midst of this period). From June 1941 until October 1942, 1,327 British Royal Air Force cadets trained at the Lakeland facility. The Lodwick School of Aeronautics closed in 1945. The airport ceased flight operations in the 1960; the site has since then housed the Detroit Tigers' "Tiger Town" baseball complex. Geography and climate According to