Grandchester Mystery Mansion

Grandchester Mystery Mansion is a haunted house exhibition in Nuka-World in 2287 where presumably Lucy Grandchester became possessed and murdered her parents, then committed suicide by hanging shortly after her 18th birthday. Currently, the house is quite booby trapped and is being used by Zachariah.

The house is locked, but entry can be obtained from the protectron working just outside the front entrance. The player can either buy a ticket, pick a ticket up off the ground by the protectron's feet and present it to the protectron, pass a Speech check to convince the protectron that they're an employee, pickpocket the key off the protectron or destroy it and loot its corpse.

Layout
This large building features several accessible floors. The tour of the building is linear, often locking the player in until the automated announcer finishes describing the current room. The tour moves through the main floor, right until the kitchen. In the kitchen is a master locked door that leads to the basement. Inside the basement is a novice locked door with a bloody scene containing six trader corpses.

From the main hall and from the kitchen are three stairs going to the second floor. The doors on the second floor accessible from the main room are all locked and need a key (and are opened later as part of the tour). The door accessible through the kitchen is unlocked as it is part of the tour. The hallway upstairs is protected by an automatic turret.

The second floor has several chambers, the first one is rigged with gas and was used for seances. The gas can be turned of by using the terminal in the back left corner. The next hallway ends with dead end stairs, and the bedroom of the child on the left. Adjacent to the child's bedroom lies the parents' bedroom, currently in use by Zachariah.

Notable loot

 * SCAV! Issue #4 (+5% explosives damage). On a wooden box in the attic storage/workshop.
 * Nuka-Punch recipe book in the room with Zachariah.
 * A Protectron model in the basement, behind a master locked door. After entering the room, it stands on the right on a tool board.
 * A mini nuke on the top floor, just behind the steamer trunk.

Appearances
Grandchester Mystery Mansion appears only in the Fallout 4 add-on Nuka-World.

Behind the scenes
The Grandchester Mystery Mansion is most likely based on the Winchester Mystery House, due to its similarity with supposed hauntings, seances and strange architecture meant to confuse spirits, such as doors and stairs to nowhere, etc. The external appearance of the house and entry sign are almost identical to those of the Winchester mansion.