Treacherous Mansion

Treacherous Mansion is the final and longest mansion that Luigi visits in Luigi's Mansion: Dark Moon. It has a museum theme. It is also the location of the final Dark Moon piece. Many rooms on the first floor of Treacherous Mansion are based off of the previous mansions in the game. Also, almost every ghost that Luigi encounters appear here.

Missions

 * ? Boo Train Boss Battle
 * ? Knight and Giga Knight Boss Battle

Treasures

 * Various types and shapes of gems.
 * Keys

Rooms

 * Gloomy Manor like rooms.
 * Haunted Towers like rooms.
 * Old Clockworks like rooms.
 * Secret Mine like rooms.
 * Various rooms containing paintings and portraits.
 * Haunted circus like room where Big Boo and Boo Train are fought.
 * Courtyard with Boo statues.
 * Alternate dimension courtyard where Knights and Giga Knight are fought.