Shinjuku Sumitomo Building

The building's three-sided construction makes good use of available space, yet the building's design sacrifices valuable floor space by including a massive atrium running the entire height of the building. The building's most recognizable characteristic is its shape and structure. It is most simply described as triangular (a more apt description would be a triangle with all the corners cut off), hence why one of its nicknames is 'the Triangle'.{{cite book|title=Shinjuku Sumitomo Building Floor Guide|date=December 2013|publisher=Shinjuku Sumitomo Building Merchants Association Office|accessdate=25 June 2014|language=English, Japanese, Korean|format=Brochure|url=http://www.shinjukusankaku.jp}} Also distinctive is the visible emergency elevator, which is used to transport cargo and not everyday passengers.

Construction began in November 1971 and was finished on March 6, 1974. At the time of its completion, its elevators were the fastest in the world at 540 meters per minute. It was the tallest building in Japan and Asia from March to September 1974, when it was surpassed by the nearby Shinjuku Mitsui Building. It was developed by Sumitomo Realty & Development, the real estate arm of the Sumitomo Group, and previously housed Sumitomo Realty's headquarters.

A pioneering skyscraper in Shinjuku, many companies are tenants of the building, as well as several restaurants. The free observation deck on the 51st floor was closed on April 1, 2017.{{cite news |title=Sign posted in 51st floor hallway |date=20 October 2020}}

In the 1984 film The Return of Godzilla, the Sumitomo Building was knocked over by Godzilla, crushing and breaking the Super X.{{cite web|url=http://www.japan-talk.com/jt/new/sumitomo-building|title=Sumitomo Building: Godzilla and The Dark Atrium|work=japan-talk.com|accessdate=17 January 2015}} Also, in the Doraemon film {{nihongo|Doraemon: Nobita and the Steel Troops|ドラえもん のび太と鉄人兵団|Doraemon: Nobita to Tetsujin Heidan}}, the building was accidentally destroyed in the World Inside the Mirror by the huge robot Zanda Claus.

• List of tallest structures in Japan

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• [http://office.sumitomo-rd.co.jp/building/detail/shinjyuku/shinjukusumitomo/ Official web site of the building] (in Japanese)
• [http://www.gnavi.co.jp/sumitomobldg/ Shinjuku Sumotomo Triangle Street] (in Japanese)

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March 1974–September 1974}}

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{{s-ttl|title=Tallest building in Tokyo | years=210 m (690 ft)
March 1974–September 1974}}

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Category:Skyscrapers in Shinjuku

Category:Skyscraper office buildings in Tokyo

Category:Office buildings completed in 1974

Category:1974 establishments in Japan

Category:Triangular buildings

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