Katori Grand Shrine

Katori Grand Shrine stands in Katori, Chiba Prefecture, and holds the rank of ichi-no-miya (primary shrine) of the former Shimōsa Province. The principal enshrined kami (shusaijin) is Futsunushi-no-Okami. It is counted among the "Eastern Three Shrines" alongside Kashima Grand Shrine and Ikisu Shrine, and is one of the few ancient shrines to bear the "Grand Shrine" (Jingu) title from classical times.

The shrine is situated on Kikkōyama hill overlooking the Tone River estuary, in an area that was a strategic point for water transport and a forward base during the pacification of eastern Japan in antiquity. The shrine precincts span approximately 370,000 square metres; the dense sacred grove behind the main hall is designated a natural monument by Chiba Prefecture.

According to the *Nihon Shoki* (Chronicles of Japan, 720 CE), Futsunushi-no-Okami was dispatched with Takemikazuchi-no-Kami to pacify Ashihara-no-Nakatsukuni, the central land of reed plains, and is recorded as the martial deity who persuaded Okuninushi-no-Okami to yield the land. The *Kojiki* (Records of Ancient Matters, 712 CE) emphasizes Takemikazuchi, while the main account in the *Nihon Shoki* centres on Futsunushi. The kami was venerated as a deity of the sword and protector of martial conduct.

Tradition holds that the shrine was founded in the eighteenth year of Emperor Jinmu's reign. The *Engishiki* (Procedures of the Engi Era, 927 CE) lists it in the Register of Shrines (Jinmyocho) as a major shrine of Katori District, Shimōsa Province, and it stands as one of three shrines—alongside Ise Grand Shrine and Kashima Grand Shrine—to have borne the "Grand Shrine" title from ancient times. From the medieval period onward, it received strong patronage from the warrior class. In 1700, Tokugawa Tsunayoshi commissioned the construction of the main hall and worship hall. The main hall and tower gate are designated Important Cultural Properties; the sacred object known as the Sea-Beast Grape Mirror (kaijū-budō-kyō) is designated a National Treasure.

Major festivals include the Spring Festival (14 April), the Twelve-Yearly Grand Procession (held in Years of the Horse), and processional rites near 15 April. The Twelve-Yearly Grand Procession forms a linked ritual with Kashima Grand Shrine's Boat Festival, uniting the Eastern Three Shrines.