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The Crypt is a room inside the Haunted Towers in Luigi's Mansion: Dark Moon. The Crypt is a fairly small room. There are rows where coffins were being placed, but some coffins are missing, and some of the shelving is broken. Part of the Crypt is blocked by a brick wall that can easily be destroyed by yanking the root jutting from it. Behind this wall are two vases and a portrait of a Toad.
During Graveyard Shift, Luigi must go to the Crypt to search for the special key to open the door inside the Hollow Tree. When he gets there, he instead finds a Toad trapped inside a portrait. Instead of searching for the key, Professor E. Gadd instructs Luigi to take the Toad to the Pixelator in the Gardener's Lab. In this same mission, using the Dark-Light Device, Luigi can reveal that one of the vases are missing inside the Crypt. After capturing the Spirit Balls, this mission's Boo appears.