BizJet, Walt Disney World's Haunted Mansion contains a upwardly stretching room that simulates the fake stretching room that attempts to mask a real elevator at the Haunted Mansion at Disneyland in California. If that makes any sense.
The purpose of Disneyland's stretching room, as you said, is to get guests into the Show Building outside the park's "berm" and to do that, the guests must be taken down underground to pass beneath the train tracks that encircle the park.
The reason Walt Disney World's does not use an elevator is that all show elements have to be at "ground level" (which is actually elevated in the case of the Florida's Magic Kingdom) due to Florida's low water table.
Dig down just a few feet and you hit water and lots of it!
When excavating to create the huge man-made Seven Seas Lagoon in front of Florida's Magic Kingdom, the "fill" was used to build-up the elevation of the Park. The underground tunnels (or Utilidors as they are called) that run beneath the Magic Kingdom that you might have heard about, are actully at ground level, with the entire Park built above them on the "second floor" as it were!
Hope that didn't just ruin the Magic for anyone!
[This message has been edited by PremEx (edited 12-03-2000).]