The 1,000-footer would be twice as tall as any coaster ever built and smash a new record for world’s tallest coaster, about to be set in 2025. Six Flags announced in November that its 456-foot ...

The once-impossible dream of a 1,000-foot-tall coaster is now feasible and in top secret development by an unnamed ridemaker, according to Dennis Speigel, an industry expert with International ...