Sannō Gongen Shrine.
(Sannō Gongen, 山王権現).

Located in Nagatachō, Chiyoda Ward, Tōkyō, this shirne holds a past intricately connected to the Meiji Restoration period.
Back in the late 15th century, during the Bunmei era, Ota Dokan led the shrine`s relocation from Kawagoe (Musashi province) to the heart of Edo Castle, as its guardian and as the ancestral deity (ubusunagami) of the Tokugawa family.
It is here that the renowned "Sanno Festival" found its roots, dating back to 1615. This festival, a spectacle of grandeur, took place every year, alternating with the Kanda Festival at Kanda Shrine. Held on the 15th day of June, achieved a place of prominence as one of Edo`s three major festivals, drawing the attention and attendance of the Tokugawa shogunate, earning monikers like "Kojimachi Sanno" or simply "Sanno."
On the 2nd year of the Meiji era (1869) the shrine underwent a name change, emerging as Hie Shrine.