Old Clockworks

Old Clockworks is the third of the mansions Luigi visits in Luigi's Mansion: Dark Moon. E. Gadd tells him that a Dark Moon piece is in the highest point of the clocktower. E. Gadd tells Luigi it closed shortly after opening due to some horrific accidents. As its name indicates, this 'mansion' is fairly clockwork themed, featuring various mechanical rooms. It is also somewhat of a desert theme, as its location features a lot of sand, as does the mansion itself. This is where Luigi can find Yellow Toad.

History
The Old Clockworks originally produced, according to E. Gadd, the finest timepieces long ago. The factory itself is the oldest of the mansions as it is the Evershade Valley's ghosts favorite haunt. The factory was built on top of some ruins. The owners of the clockworks seemed interested in this as mining and excavation equipment can be found strewn about the ruins. There is also a stairway leading from the factory into the ruins. It is unknown why it closed down, but several jackets, coats and hats can be found still on racks, and the large amount of equipment and crates left behind, suggests something happened within the factory itself to cause it to be abandoned.

Missions

 * C-1: A Timely Entrance
 * C-2: Underground Expedition ("Underground Trek" in PAL Version)
 * C-3: Roundhouse Brawl
 * C-4: Play Catch ("Ghosty in the Middle" in PAL version)
 * C-5: Piece at Last
 * C-Boss: Showtime ("Show Time" in PAL Version)

Confirmed Objects

 * Old Artifact
 * Strange orb-like objects that get put into a machine, one of these a Key.
 * Clock hands (minute and hour hands)
 * 13 Rubies

Bosses

 * Mini-Boss: Ancient Poltergeist
 * Boss: Overset Possessor (posessing a giant clock)

Rooms
First Floor
 * Clockworks Court
 * Warehouse
 * Roundhouse
 * Canyon Stairs (Ravine Stairs in PAL Version)
 * Workshop
 * Clock Tower Gate
 * Movements
 * Cargo Room
 * Service Elevator (Service Lift in PAL Version)
 * Gear Chamber
 * Storage Room

Second Floor
 * Warehouse
 * Clockmaker's Chambers (Clockmaker's Room in PAL Version)
 * Roundhouse
 * Transportation Hall
 * Finishing Room
 * Container Yard
 * Kiln Room
 * Drafting Office
 * Clock Tower Gate
 * Movements
 * Belfry
 * Cargo Room

Third Floor
 * Belfry

Basement 1
 * Storm Cellar
 * Canyon Hall (Ravine Passage in PAL Version)
 * Canyon Narrows (Ravine Narrows in PAL Version)
 * Roundhouse Pit
 * Pit Slide
 * Canyon Stairs
 * Synchronization Room
 * Synchro Gantry
 * Maintenance Hub
 * Crank Room
 * Service Elevator
 * Gear Chamber
 * Storage Room

Basement 2
 * Pit Slide
 * Quarry
 * Antechamber
 * Tomb