Otemachi derives its name of Otemon ("Great Hand Gate") of Edo Castle. During the Edo period, various daimyos constructed their lavish residences outside the castle.
Today, Otemachi is known as a center of Japanese journalism, housing the main offices of three of the "big five" newspapers as well as being a key financial center and headquarters for large Japanese corporations.
(From Wikipedia)
Otemachi Station
Chiyoda Line
Marunouchi Line
Hanzomon Line
Tozai Line
Mita Line
Takebashi Station
Tozai Line