All the rooms of this renovated Tokyo house by Japanese studio Naf Architect & Design are connected to a wooden box at its centre. The architects liken this connecting room to an electrical switch box. It contains staircases leading up and down, an entrance from the house into the client’s chiropractic surgery and a small seating area. Narrow grooves between each of the wooden slats let light filter inside and provide space for hanging picture hooks. The living and dining room is located on the first floor just above, where the the roof of the box forms the surface of a kitchen worktop.

Source: Dezeen