This document summarizes the top five tallest steel roller coasters in the world, beginning with Kingda Ka in New Jersey standing at 456 feet tall and reaching speeds of 128 mph. Second is Top Thrill Dragster in Ohio at 420 feet with top speeds of 120 mph, followed by Superman: Escape from Krypton in California at 415 feet going 100 mph. Fourth is Tower of Terror in Australia reaching 377 feet and 100 mph. The fifth tallest is Fury 325 in North Carolina at 325 feet and speeds of 95 mph.