Nikken Sekkei
The , often known as "NEC Supertower, SuperTower or simply Supertower", headquarters of NEC Corporation, is a 180-metre (590 foot) tall skyscraper in Minato, Tokyo, Japan. It was completed in 1990 and was designed by Nikken Sekkei. Its primary use is as a commercial office space. Forty-three stories high and five underground, it was constructed at a cost of some 60 billion yen, according to "Nikkei Business", January 5, 2007 edition.