This diorama belonged to Michael Jackson. It was custom made for him by the Walt Disney Company.
I saw it listed at liveauctioneers.com:
June 1st Update
Here are a few more pieces from Jackson's Disney collection that were up for auction:
Here's another diorama (Pinocchio) custom made for Michael. If you look closely at the bottom photo you can see that the Disney artists included a little Michael Jackson, sort of hidden.
This is a custom Peter Pan installation built into one of the roofs at Neverland.