Marunouchi is the core of Tokyo's central business district as well as one of the main financial centres in Japan.
In 1590, before shogun Tokugawa Ieyasu entered Edo Castle, the area now known as Marunouchi was an inlet of Tokyo Bay and had the name Hibiya.
Following the Meiji Restoration, Marunouchi came under control of the national government, which erected barracks and parade grounds for the Imperial Japanese Army.
Marunouchi was targeted in the 1974 Mitsubishi Heavy Industries bombing by the radical far-left terrorist organisation East Asia Anti-Japan Armed Front.
[17] Chiyoda Board of Education [ja] operates public elementary and junior high schools.