Magnum XL-200 was announced on August 16, 1988, and construction began shortly thereafter. Following its completion in 1989, Kinzel was one of the first people to ride the coaster, boarding the train after one test cycle. It officially opened to the public on May 6, 1989 as the world's tallest, fastest and steepest complete-circuit roller coaster. It was measured for the Guinness Book of World Records on June 2. Cedar Point set a record attendance in 1989, due in part to the introduction of the Magnum.