Today's AMAZING UNREALIZED ATTRACTION may come as a bit of a shock, as up until this point it has never been made public that "The Amazing Adventures of Spider-Man" attraction at Islands of Adventure, widely regarded as the greatest ride ever created, began life as a SUPERMAN 3D RIDE.
Back when development of IOA (then known as Project X) began in the early 90's, it was believed that DC COMICS would be represented within the park- not MARVEL.
Of course, Universal wisely went in a different direction and the rest is history. Gary Goddard and the Landmark team adapted their concept to Spider-Man, which was then brilliantly executed by the Universal Creative team including Thierry Coup, Scott Trowbridge, Phil Bloom, and many others.