sentences:  For several years, Montaña Rusa held the record of world's tallest roller coaster.With the conversion of Medusa at Six Flags México into a hybrid rollercoaster in 2014, Montaña Rusa is the only wooden roller coaster in Mexico.Montaña Rusa was constructed in 1964 by International Amusement Devices, Inc. and was designed by Aurel Vaszin and Edward Leis.