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

 * E-1: Front-Door Key
 * E-2: Double Trouble
 * E-3: A Train to Catch
 * E-4: Ambush Maneuver
 * E-5: Paranormal Chaos
 * E-Boss: Stop the Knightmare
 * E-Bonus: Terrifying Invasion

Treasures

 * Various types and shapes of gems.
 * Keys

Rooms

 * Veranda
 * Front Entrance
 * West Gallery
 * Dark Age Exhibit
 * Grand West
 * Ice Age Exhibit
 * Gargoyle Roof
 * Kitchen
 * Restrooms
 * Ancient Exhibit
 * Grand East
 * Jungle Exhibit
 * East Gallery
 * Various rooms containing paintings and portraits.
 * Haunted circus like room where Big Boo and Boo Train are fought.
 * Inner Courtyard
 * Alternate dimension courtyard where Knights and Giga Knight are fought.