5. Rocket to the Moon / Mission to Mars

Rocket to the Moon opened in 1955, and took guests on a simulated flight to the moon. Designed in conjunction with NASA, it quickly became outdated as NASA actually accomplished the feat of landing men on the moon.

The ride was replaced by the updated Mission to Mars in 1975. In the pre-show area, known as Mission Control, the audio-animatronic flight director explained the background to the mission. Guests then boarded a "spacecraft", which contained a circular theater with stadium-style seating, for a journey into space, onwards to Mars, and then back to Earth.

4. Rocket Rods

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-placed 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 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.

3. Videopolis

Perhaps the quintessential 1980s Disneyland attraction is Videopolis, installed in 1985 as a way to appeal to teenagers and young adults. Located in Fantasyland, it hosted shows during the day but came to life at night when it transformed into an open-air dance club. It featured 70 video monitors, which showed music videos or live feeds, as well as a snack bar featuring the trendy name "Yumz".

Videopolis was tied into another 1980s Disney initiative - the launch of the Disney Channel. A show dedicated to the attraction was filmed live at Disneyland, and featured top bands and singers such as New Kids on the Block and Janet Jackson. It was shuttered in 1995, being replaced by the Fantasyland Theater.

2. Skyway

Disneyland's version of the Skyway opened just a year after the park itself, on June 23, 1956. It was built by Swiss specialist Von Roll, and was the first aerial ropeway of its type in the USA. Three years later, Disneyland added the Matterhorn Bobsleds roller coaster, complete with its signature mountain. It was directly in the path of the Skyway, so was carefully built around it.

The Skyway reached the end of the line at Disneyland when stress cracks were found in the Matterhorn roller battery supports in 1994. It was removed on November 9 of that year, although the Fantasyland station remains (but it is off-limits to guests). The holes that were once in the Matterhorn have long since been filled in.

1. PeopleMover

Walt Disney longed for an overhead transportation system that could offer people a rapid overview of an area in a city. In 1964, he set Imagineer Bob Gurr to work on creating one. The result was the WEDWay, also known as the "PeopleMover". The ride, opened in 1967 in Tomorrowland, employed a unique turntable system to enable continuous loading. Though it wasn't picked up by dozens of major cities as Disney had hoped, the WEDWay system is still in use at the George Bush Intercontinental Airport in Houston, Texas.

Disneyland has long hinted at a return for the PeopleMover in some capacity. The latest rumors suggest that it will re-emerge as a Star Wars-themed walkthrough attraction.