The Lab

The Lab is a room in Luigi's Mansion. It is here that Professor E. Gadd informs Luigi about the mansion and its ghosts near the beginning of the game, and later provides information on Boos. This is also where E. Gadd asks the player where they want to go; to the Mansion, the Training Room, the Gallery, or, once the game is beaten, the Hidden Mansion.

Trivia

 * There is a tall, wooden ladder in the lab that can only be barely seen in-game. Through cheat codes, Luigi is able to actually climb the ladder up to the top through a tall, vertical tunnel, but the ladder doesn't actually lead to any in-game areas.