It used to be in Adventureland, but it's not there any longer. Notice the
prominent Kellogg's product placement.

This was a room where players
could try out the Pirate Magic, Buried and Treasure Magic and Cursed Storm Magic.
Just about everyone on the various forums shared the codes (as they were
not single-use codes like quest or Sparrow). The Spell Room in Fantasyland
similarly showcased Invisibility, Fireworks, Teleport, Inferno and Flying Carpet
magic.
Nobody really knows why those rooms were taken out of VMK.