Daidarasaurus is a steel roller coaster, located at Expoland in the city of Suita, Osaka Japan. According to some sources (i.e. http://www.rcdb.com/ the roller coaster database), Daidarasaurus is currently the second longest roller coaster in the world, behind Steel Dragon 2000. For reasons explained below, other sources (i.e. the Guinness Book of World Records) did not recognize Daidarasaurus's claim as longest roller coaster in the world from 1999 to 2000.