皇居Kokyo

Tokyo Imperial Palace (皇居, Kōkyo, literally, "Imperial Residence") is the main residence of the Emperor of Japan. It is a large park-like area located in the Chiyoda area of Tokyo close to Tokyo Station and contains several buildings including the main palace (宮殿, Kyūden), the private residences of the imperial family, an archive, museum and administrative offices.

from Tokyo_Imperial_Palace (Wikipedia) CC BY SA 3.0