Kasumigaseki Common Gate

The Kasumigaseki Common Gate (霞が関コモンゲート, Kasumigaseki Komon Geito) is twin tower buildings located in Kasumigaseki, Chiyoda, Tokyo. The buildings consist of East Tower and West Tower.[1] Together with the adjacent Kasumigaseki Building, the first modern office skyscraper in Japan, the twin towers are landmarks in the Toranomon/Kasumigaseki area. The buildings are directly connected to Toranomon Station of Tokyo Metro Ginza Line.

Kasumigaseki Common Gate
General information
Location3-2-1 Kasumigaseki
Chiyoda, Tokyo, Japan
Construction startedJanuary 2005
OpeningOctober 2007
Roof176 meters (577 ft)
Technical details
Floor count38 above ground
3 below ground
Design and construction
ArchitectKume Kensetsu, Taisei Kensetsu, Shin Nihon Steel
Structural engineerTaisei Kensetsu, Shin Nihon Steel, Nihon Densetsu, Mitsubishi Heavy Industry

East Tower

East Tower is owned by the Japanese Government and is occupied by Ministry of Education, Culture, Sports, Science and Technology and Board of Audit. The building is 33 stories or 156 meters high and the total floor area is 114,600 square meters.[1]

West Tower

The Japanese Government and private sectors co-own West Tower. The lower half of the building is a governmental floors and is occupied by Financial Services Agency. Major tenants of the upper half are Teijin, Daiwa SB Investment, Aichi University Tokyo Office, Toho Tenax, MODEC, Tokuyama Corporation,[2] K&L Gates Tokyo Office, Sugimura & Partners, and Kazan Kai (one of the co-owners). The building is 38 stories or 176 meters high and the total floor area is 118,700 square meters.[1]


  1. "Kasumigaseki R7 Project" (PDF) (Press release). Tokyo Tatemono. June 29, 2007. Archived from the original (PDF) on May 12, 2013. Retrieved January 10, 2014.
  2. "Business Sites in Japan." Tokuyama Corporation. Retrieved on February 13, 2015

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