Luigi's Mansion is King Boo's base of operations in the game Luigi's Mansion. Mario is kidnapped by King Boo while checking out the place when Luigi supposedly wins a mansion in a contest he didn't even enter. during the adventure luigi meets professor Elven gadd who give's luigi the poluergust 3000 to save Mario .In the end of the game the mansion is converted into a house that Mario and Luigi live in.
Luigi's Mansion appears as an arena in Super Mario MHL.
Luigi's Mansion appears as a stadium in Mario Baseball All-Stars.
Luigi's Mansion is a court in Mario Basketball: Mushroom Tourney.