Skyscraper was a roller coaster concept originally planned for a future Skyplex entertainment complex located in Orlando, Florida. Development began in 2012 by American manufacturer US Thrill Rides and Swiss manufacturer Intamin, with both companies designing the attraction as the first Polercoaster model utilizing an observation tower for its main support structure. Skyscraper would have been the tallest roller coaster in the world at over 500 feet (150 m), and it would have featured both the steepest drop and highest inversion in the world.