Giant staircase takes center stage in this Japanese house

Exterior shot of house lit up at night with a huge staircase running through a glass facade.Takumi
Ota

Part art, part function

A staircase is typically a utilitarian feature. It take you from
one place to another, often with little fanfare. The stairs on this
Tokyo house by the prolific Japanese studio Nendo are just the opposite. They beg
for attention (and they get it) thanks to their unmissable
placement in the center of the house.

Named the Stairway House for obvious reasons, the residence
features a glassy facade through which a concrete staircase cuts
like an oversized zipper. The staircase stretches from the
exterior, through the doorway, and diagonally through the home,
connecting the three floors before rising into an impossible
incline.

Steep concrete staircase cutting through houseTakumi
Ota

Intended to house two families, the design employs the hulking
staircase as a way to subtly connect an older couple living on the
ground floor and the young family living on the second and floor
floors.

Shown in these photos as a show-stopping plant stand, the
staircase obscures an additional function: Hidden within the
oversized stairway are the bathrooms and another set of stairs for
actually navigating the home.

Interior staircase painted blackTakumi
Ota

Table and chair on staircaseTakumi
Ota Dining room next to large concrete staircase
Takumi Ota Bright room with wooden platform bed.
Takumi Ota Empty room with a bench and glass walls.
Takumi Ota

Source: FS – All – Architecture 10
Giant staircase takes center stage in this Japanese house