The concept of TIERS, HQ building of Arakawa & Co., Ltd in Tokyo, is a showroom and gallery space that is not restricted to professionals, but open to the city. It creates an open environment in which people passing through the city can freely visit.
TIERS includes a grand staircase leading from the outside city streets to inside the foyer, a terrace on the middle floor, and eventually, the top floor, with a facade of interlinking wire cable patterns, gradually creating a continuous space with the city. On the middle floor, the staircase diverges into a culvert-like terrace, thus connecting the space within as well.