Big Boo's Haunt

Big Boo's Haunt is a creepy, 2 story mansion located in a small birdcage. It is inhabited by none other than Big Boo himself, but in Super Mario 64 DS you could find King Boo there as well. There is a small shack on the side of the mansion that has a lift to some sort of basement area. In the center of the basement is, strangely, a large merry-go-round.

Whenever Mario killed a ghost in the first star mission of the level, King Boo would deliver the creepy message, "Ghosts can't die. Can you get out of here ALIVE?"