5. Rocket Rods (Disneyland)

In 1998, Disneyland's Tomorrowland underwent a major overhaul, re-emerging as New Tomorrowland. One of the "casualties" of the project was the former PeopleMover attraction, which had been installed to offer guests an overview of the area. Its moderately-paced vehicles were replaced by the Rocket Rods, a high-speed thrill ride that operated on the same track. After boarding a 5-seat Rocket Rod, riders raced around the circuit at a much faster pace than the only WEDway vehicles. Unfortunately, the new attempt to bolt the new attraction onto the existing PeopleMover infrastructure proved to be catastrophic. The unbanked turns weren't suited to high speeds, so the Rocket Rods had to slow down to a crawl on each bend. Tires wore out quickly, and the entire attraction was shuttered in September 2000. It's still standing but not operating today.

4. Tomorrowland Boats (Disneyland)

Installed to pad out Disneyland's opening day line-up, the Tomorrowland Boats were similar to an aquatic version of Autopia. However, the boats' motors frequently overheated, throwing off large volumes of smoke. Eventually, Cast Members had to be assigned to each boat, acting as pilots, and the attraction was renamed as the Phantom Boats. The extra expense of this was too much, though - with 14 employees operating just 14 boats that could carry two to three guests each. The attraction closed in August 1956.

3. Stitch's Supersonic Celebration (Magic Kingdom)

Image: Disney

Stitch's Supersonic Celebration debuted on May 6, 2009 at the Magic Kingdom. Based on the popular alien cartoon character, the show featured a live dance troupe on stage and was centered around "Galaxy Day" - a massive celebration involving "everyone in the galaxy". It saw a broadcast of the Tomorrowland News Network being hijacked by Stitch, with guests learning dance moves from the on-stage dancers. The show proved to be an expensive flop for Disney, lasting less than two months before closing down on June 27. Guests complained about having to queue out in the open in the heat of Florida - and probably appreciated being asked to dance along afterwards even less.

2. The Flying Dragon (Magic Kingdom)

Image: Disney

What's that flying overhead? Is it a bird? Is it a plane? Nope - it's a FLYING, FIRE-BREATHING DRAGON. The dragon, which is actually a micro-light aircraft, took to the skies above the Magic Kingdom during the media preview event for the updated New Fantasyland in December 2012. As can be seen in the video below, the aircraft did an impressive job of simulating a "real" dragon: Disney described the stunt as a "special, one-night appearance" for the dragon, and it hasn't become a regular fixture at the park. But could a similar creation make a comeback as part of the debut of Pandora - The World of Avatar over at Disney's Animal Kingdom? We'll have to wait and see.

1. Viewliner (Disneyland)

When the Mickey Mouse Club Circus closed, something quick and simple was needed to fill the space. Imagineer Bob Gurr suggested adding a miniature railway based on General Motors' futuristic Aerotrain, which ran on an experimental basis between Los Angeles and Las Vegas in 1956. "The fastest miniature train in the world" (as it was billed by Disney) opened in June 1957, featuring two scale replicas of the Aerotrain. They raced through parts of Tomorrowland and Fantasyland, and were designed to represent the future of rail travel (in contrast to the steam locomotives of the Disneyland Railroad). The Viewliner trains were not to last long. On September 15, 1958 they were closed to make room for a major expansion that added the Disneyland Monorail, the Submarine Voyage and the Matterhorn Bobsleds.