Shinjuku Mitsui Building

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Shinjuku Mitsui Building
Shinjuku Mitsui Building 2009 02.jpg
Shinjuku Mitsui Building at sunset
General information
Type Office
Location Shinjuku, Tokyo, Japan
Coordinates 35°41′31″N 139°41′38″E / 35.691898°N 139.693903°E / 35.691898; 139.693903Coordinates: 35°41′31″N 139°41′38″E / 35.691898°N 139.693903°E / 35.691898; 139.693903
Construction started 1972
Completed 1974
Opening September 1974
Owner Mitsui Fudosan
Roof 224.9 m (738 ft)
Top floor 212.1 m (696 ft)
Technical details
Floor count 55
Floor area 176,671 m2 (1,901,670 sq ft)
Design and construction
Architect Nihon Sekkei
Developer Mitsui Fudosan
Structural engineer Kiyoshi Mutō

The Shinjuku Mitsui Building (新宿三井ビル Shinjuku Mitsui Biru?) is a high-rise building in super in the corner in the heart of New Urban Center, Nishi-Shinjuku, Shinjuku, Tokyo. It is run by Mitsui Fudosan. Known as the Shinjuku Mitsui Building. Also, it is called Mii Building. It is the eighth tallest building in Tokyo, and was the tallest building in Tokyo and Japan, from September 1974 until March 1978, when Sunshine 60 was completed.

It was built in the style of American buildings that were being built at around that time. The thing that made it stand out was the black channels running down its east and west sides. At the base of the skyscraper, there is a sunken garden and a surprisingly large plaza. In addition to the sunken garden, there is also a roof-top garden.


Its height is 210 meters high, 225 meters maximum at the crest. It was the tallest building in Japan for a short period of time after its completion. Its second floor appears as Lobby. Since this building uses the color of black for its basis, it has a conspicuous appearance among the skyscrapers in Shinjuku. The original tower is now completed as black, but it was originally white. The building near Shinjuku Mitsui Building is called Shinjuku Center Building, which is 2 meters lower than the Shinjuku Mitsui Building.

Steel X-shaped building on the side, along with the bracing for seismic reinforcement, which is also a machine room door holding the ends of the floor established. Every 4-5 floors only have one machine room door, this is designed because it makes replacing machines, such as air-conditioners, easier.The building also incorporate the design of the Keio Plaza Hotel. Some parts of the fire escape exits are exposed outside the building, thus, when there is a fire accident, the smoke will not get into the fire escape exits.


Major tenants[edit]

The Capcom Tokyo offices are in the building.[1]

Spot tenants[edit]

From long time ago, Shinjuku had been known as skyscraper street. Shinjuku Mitsui Building is one of the tallest building in Shinjuku and there are a lot of tenants companies in this building. Despite the fact that this building has been built for a long time, it always maintains its neatness from inside to outside.

The top floor is the 55th floor, it was occupied with Chinese restaurant called Mandarin Palace for several years. But now it becomes the place for tenants' offices.On the 54th floor, there are some restaurants, and a club called "Shinjuku Mitsui Club", which only allows employees, OB from Mitsui Group, and their relatives to enter. There is no observation room open for the general public to visit.

At south of Shinjuku Mitsui Building, there is a ceiling called "55 hiroba", where visitors can have a rest or take some snacks. Also, some free concert events and free markets are hold there.

Except tenants and offices, these are the other shops open in Shinjuku Mitsui Building (from December, 2010)

  • B1

Ministop, Starbucks, Doutor Coffee, restaurants for Okinawa, Indian, Thailand, Mandarin, Korean Cuisine.

  • First Floor

Royal Host, Post office, Seiko Epson, Mitsui Dudoson Realty, Kyokuto Securities Co.,Stand DELi

  • Second Floor

Sizzler, Sumitomo Mitsui Banking Corporation

  • Third Floor

Restaurants and Izakaya

  • 4-5th Floor

Clinics, Dental Hospital, Medical Center

  • 54th Floor

Heichinrou, Shinjuku Mitsui Club

How to reach[edit]


  1. ^ "Locations." Capcom. Retrieved on August 12, 2011. "Shinjuku Mitsui Building 2-1-1 Nishi Shinjuku, Shinjuku-ku, Tokyo"
Preceded by
Shinjuku Sumitomo Building
Tallest building in Japan
225 m (738 ft)
Succeeded by
Sunshine 60
Tallest building in Tokyo
225 m (738 ft)