Shinjuku Sumitomo Building, Skyscraper in Nishi-Shinjuku, Japan
The Shinjuku Sumitomo Building rises 210.3 meters with 52 floors and features a distinctive three-sided construction incorporating a massive central atrium.
Upon its completion in 1974, the building stood as the tallest structure in Japan and Asia, marking a milestone in regional architectural development.
The building's triangular shape and cut-off corners earned it the nickname 'Triangle' among local residents, reflecting Japanese appreciation for geometric architectural forms.
The structure contains 38 elevators and underwent extensive renovations in 2020, including the addition of a glass-covered public plaza called Sankaku Hiroba.
The building incorporated INAX Terracotta bricks that reference the Karami Bricks from Besshi Copper Mines, connecting the structure to industrial Japanese heritage.
Location: Nishi-Shinjuku
Inception: April 4, 1974
Architects: Nikken Sekkei
Floors above the ground: 52
Elevators: 38
GPS coordinates: 35.69127,139.69260
Latest update: May 26, 2025 21:50
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