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. It closed sometime after opening due to a large amount of unexplained horrific accidents. It is unknown what these accidents are exactly, but several work coats can be found jammed in the large gears found inside the Old Clockworks.

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