The Mansion (大正屋敷, Taishō Yashiki, Taisho Mansion) is an area accessible from the Flooded Ramparts. This place is divided into a lobby, two corridors, an underground storage and a terrace, forming four floors. All parts of the place have a slight dark tone (especially the storage) that can be countered with the Lantern effect.
A darker place with cones, stagnant water, one candle and many boxes. In the right part you can find a door which takes you to the Industrial Maze.
The first floor of the Mansion is composed of a lobby and a corridor. In the center of the lobby you can see a kind of chandelier on the ceiling, a big blocked door and candles and windows on the walls. To the right from the big door is another door which takes you to the corridor. The corridor only has windows, a flower in a white vase, and two staircases.
The second floor consists only of a corridor with three windows. There you can find a NPC which takes you to the Deserted Pier.
This area has a small corridor with a door and yellow squares similar to illuminated windows. Inside the door is a small darker room with white flowers, two chandeliers, one bookshelf, one illuminated door and a table with a book cup above. The door takes you to a terrace with a bench, a vending machine and another terrace. Also you can see water in the background.
Nexus → Red Streetlight World → Gray Road → Grass World → Green Neon World → Construction Frame Building → Cog Maze → Forest Pier → Abandoned Factory → Arc de Pillar World → Flooded Ramparts → Mansion