Mizuho Bank Uchisaiwaichō Head Office Building

The Mizuho Bank Uchisaiwaichō Head Office Building (みずほ銀行内幸町本部ビル, Mizuho Ginkō Uchisaiwaichō Honbu Biru) is a 143 m (469 ft) tall office skyscraper in Tokyo, Japan. At 38 stories the building is the 86th tallest building in Tokyo. It contains 1.4 million sq ft (134,974 m²) of office space, 100% of which is now occupied by Mizuho Bank, the consumer banking arm of the second-largest Japanese financial conglomerate Mizuho Financial Group, while still called the DKB Head Office from time to time.

Mizuho Bank Uchisaiwaichō Head Office Building
General information
Type	Office
Location	Chiyoda, Tokyo, Japan
Coordinates	35°40′14″N 139°45′26″E
Construction started	1977
Completed	1980
Height
Antenna spire	142.5 metres (468 ft)
Roof	132.0 metres (433 ft)
Top floor	32
Technical details
Floor count	36 (32 above ground, 4 underground)
Floor area	135,014 m2 (1,453,280 sq ft)
Design and construction
Architect	Yoshinobu Ashihara
Main contractor	Shimizu Corporation Kajima Construction Ando Corporation Sato Kogyo Co.,Ltd. Nissan Construction

The Mizuho Bank Head Office Building from near its base.

The building was built in Chiyoda at 1 Uchisaiwaichō in 1981, when it was called the Dai-Ichi Kangyo Bank Head Office Building. It was designed by architects Yoshinobu Ashihara & Partners and developed by Shimizu Corporation, one of the “big five” real estate developers in Japan. Dai-Ichi Kangyo Bank (“DKB”) combined with Fuji Bank and the Industrial Bank of Japan in 2000 to form Mizuho Financial Group.