The Three Palace Sanctuaries (宮中三殿, Kyūchū sanden) are a group of structures in the precincts of the
Tokyo Imperial Palace in
Japan. They are used in imperial religious ceremonies, including weddings and
enthronements.
The three sanctuaries are:
Kashiko-dokoro (賢所) – the central shrine, enshrining a replica of the mirror
Yata no Kagami, representing the mythological ancestress of the
Imperial Family,
Amaterasu. (For the enthronements in
Kyoto of
Emperor Taishō in 1915 and of
Emperor Shōwa in 1928, the mirror was transported by special
rolling stock known as the Kashiko-dokoro Jōgyosha (賢所乗御車) from the name of this sanctuary.) The Yasakani no magatama or Sacred Jewel, one of the
Imperial Regalia of Japan, is also said to be housed in the Kashiko-dokoro.
Kōrei-den (皇霊殿) – the
Ancestral Spirits Sanctuary, enshrining the departed spirits of the Imperial Family from one year after their death.