|click to embiggn Photo Credit: Mental Floss|
As shown in the map above, there is a network of tunnels under Disney World in Orlando to help maintain the park's "magic" and not let visitors see the workings "behind the curtain".
Read all about it here, and the evocatively-named secret rooms ranging from the Mouseketeria to the Glow Room and the Character Zoo.
Known as utilidors, there are 392,040 square feet of tunnels under the Magic Kingdom. These were actually the first level of the park built and are accessible for members of the Disney team via strategically-placed, concealed, staircases around the site.
As gaming fodder - as well the obvious straight Disney-themed dungeoncrawl - this seems like the perfect setting for a post-apocalyptic slice of survival horror, possibly mixed in with a slice of Banksy's latest project, Dismaland, for good measure.