The buildings are directly connected to Toranomon Station of Tokyo Metro Ginza Line.

East Tower is owned by the Japanese Government and is occupied by Ministry of Education, Culture, Sports, Science and Technology and Board of Audit.

[1] 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).