DN Tower 21[note 1] is an office building in Tokyo, Japan. It includes the former Dai-Ichi Seimei Building, in which Douglas MacArthur had his headquarters during the occupation of Japan following World War II. The Government of Tokyo designated DN Tower 21 as a historical building in 2004.

The DN Tower 21 overlooks the moat around the Imperial Palace.
The Dai-Ichi Seimei Building when it served as the headquarters of SCAP, c. 1950.

The shorter five-story building, the former headquarters of SCAP, was completed in 1933 (renovated 1989–1995) for the headquarters of the Norinchukin Bank, and the Dai-Ichi Seimei began to house its offices in the building in 1938. The shorter building was designed by the Japanese architect WATANABE Jin and MATSUMOTO Yosaku. The taller 21-story building (at 99.8 metres in height) began construction in 1988 and was completed in 1993, and was designed by the Irish-American architect Kevin Roche. Shimizu Corporation was contracted to construct both buildings.

The building still serves as headquarters for both the Norinchukin Bank and Dai-ichi Life.

Notes

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  1. ^ "D" stands for Dai-ichi Life and "N" stands for the Norinchukin Bank
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35°40′33″N 139°45′39″E / 35.675869°N 139.760806°E / 35.675869; 139.760806