Tsukiyomi-no-Miya (Naikū) — 月讀宮

Tucked in Nakamura-cho, roughly 1.8 kilometres from the main sanctuary of Ise Jingu’s Inner Shrine (Naiku), Tsukiyomi-no-Miya feels a world removed from the pilgrim crowds of the Okage Yokocho. Four thatched shrine halls stand east-to-west in a row behind clean gravel and cedar shadow — the moon god’s gentle precinct, unhurried and silver-quiet.

As the betsugu (auxiliary shrine) ranked highest among all Naiku betsugu located outside the main precinct, it holds a prestige matched only by Aramaturi-no-Miya within the inner enclosure. Visiting at dusk, when slanted light catches the thatching and the air smells of cypress resin, is to understand why the Ise pilgrimage has always been about far more than one great hall.

The earliest written record of Tsukiyomi-no-Miya appears in the Daijingu Gishikicho compiled in 804 CE during the reign of Emperor Kanmu (50th emperor). That document describes the complex as “Tsukiyomi-no-Miya — one precinct, four main halls,” confirming the four-shrine configuration already existed as a single enclosure by the early Heian period. In 867 CE, Emperor Seiwa (56th emperor) formally granted the shrine names Isanaki-no-Miya and Isanami-no-Miya to the halls enshrining the creator deities. By the Engishiki of 927 CE (Emperor Daigo’s reign), the four halls had reorganised into two paired precincts: Isanaki-no-Miya and Isanami-no-Miya sharing one sacred fence, and Tsukiyomi-no-Miya together with Tsukiyomi-no-Aramitama-no-Miya in another. The current arrangement — each of the four halls surrounded by its own individual zuigaki fence — dates from the Meiji period, specifically 1873. The most recent Shikinen Sengu (ritual reconstruction every 20 years) took place in October 2014, as part of the 62nd cycle of Ise’s Grand Sengu; the main Tsukiyomi-no-Miya hall was transferred on the evening of 6 October, the three companion halls following over the next four days. Old timbers from Tsukiyomi-no-Aramitama-no-Miya were donated to Yakumo Shrine in Ashikaga, Tochigi, which had lost its main hall to fire in 2012.

The principal deity is Tsukuyomi-no-Mikoto (月讀尊), the moon god born when Izanagi purified his left eye after escaping the underworld. Tsukuyomi is the younger sibling of the sun goddess Amaterasu and governs the night sky, the counting of months, and the rhythms of tide and harvest. Because Amaterasu’s own vigour (nigimitama) resides at the main Naiku sanctuary, Tsukuyomi stands as the second-highest kami in the Naiku betsugu hierarchy. A second hall enshrines Tsukuyomi-no-Mikoto-no-Aramitama (月讀尊荒御魂) — the fierce, active aspect of the same moon deity, housed separately in keeping with Ise’s long tradition of venerating the gentle (nigi) and wild (ara) souls of a kami in distinct sanctuaries. The third and fourth halls enshrine the primordial creator couple: Izanagi-no-Mikoto (伊弉諾尊) in Isanaki-no-Miya and Izanami-no-Mikoto (伊弉冉尊) in Isanami-no-Miya, honouring the parents of both Amaterasu and Tsukuyomi. The precinct also contains the Ashihara Shrine (Yashirahara Jinja), an Inner Shrine massha dedicated to three deities of rice paddies and abundant grain.

Classical mythology explains the eternal separation of sun and moon through a quarrel rooted in Tsukuyomi’s actions. According to the Nihon Shoki, Amaterasu sent Tsukuyomi to greet Ukemochi-no-Kami, a food goddess. When Ukemochi produced a banquet by spitting food from her body, Tsukuyomi was disgusted and killed her. Amaterasu, hearing of the murder, declared she never wished to look upon her brother again — and from that moment, the sun and moon divided the sky between day and night, never meeting. This estrangement, preserved in the arrangement of Ise’s own shrines (Tsukuyomi’s outer shrine counterpart, Tsukiyomi-no-Miya at Geku, stands apart from the main Toyouke precinct just as Tsukuyomi stands apart from Amaterasu), gives mythic weight to the lunar shrines of the Ise complex. At the local level, the popular epithet Tsukiyomi-san — used identically for this Naiku betsugu and for Tsukuyomi-no-Miya at the Outer Shrine — reflects a long folk tradition of treating the moon deity as an approachable guardian of nocturnal blessing and safe journeys after dark.

All four halls at Tsukiyomi-no-Miya follow the shinmei-zukuri style that defines Ise architecture: thatched cypress-bark roofs (kayabuki), unpainted hinoki cypress timber, and the characteristic forked roof-finials (chigi) cut inward (uchi-kiri) as prescribed for Inner Shrine style. Each roof carries six horizontal log weights (katsuogi), an even number in keeping with Naiku convention. All four halls face south. The Tsukuyomi-no-Miya hall itself is marginally larger than its three companions, and its torii gate is correspondingly taller — subtle markers of its primary rank. The standard Ise practice of maintaining a vacant adjacent plot (kodenchi) for each hall’s next sengu is observed, though unusually for Tsukiyomi-no-Miya the old and new sites run north-south rather than the east-west alignment seen elsewhere. From right (east) to left the halls stand: Tsukiyomi-no-Aramitama-no-Miya, Tsukiyomi-no-Miya, Isanaki-no-Miya, Isanami-no-Miya — yet the prescribed order of worship reverses the visual sequence, beginning with Tsukiyomi-no-Miya itself.

Tsukiyomi-no-Miya follows the same liturgical calendar as the Grand Shrine. The most significant observances are the three sansetsusai festivals that bring imperial offerings (heihaku) directly from the Imperial Household: Tsukinamisai (月次祭, June 18–19 and December 18–19), held to pray for national peace and the emperor’s longevity; Kannamesai (神嘗祭, October 18–19), at which the year’s first rice harvest is presented to the kami — the most solemn of the three; and Niiname-sai (新嘗祭, November 24), celebrating the completed harvest. The agricultural cycle is further marked by Kinensai (February 18), praying for plentiful grain at the year’s start, and two rounds of Kazahinomisai (May 14 and August 4), petitioning the wind and rain kami to spare the crops. New Year brings Saitansai (January 1) and Genshisai (January 3). A resident shukeiya (guardian station) inside the precinct handles amulet distribution, goma-fuda tablets, and the arrangement of kagura ceremonies year-round.

Autumn is the finest season: the Kannamesai in mid-October fills the precinct with quiet ceremony, the air is cool, and cedar foliage frames the thatched roofs in soft colour. Arriving at dusk — when the shrine is still open but the tour groups have thinned — honours the moon deity’s own domain. The New Year period (January 1–3) draws large crowds for the Saitansai and Genshisai, which is festive but busy. Midsummer (July–August) is hot and humid; the Wind-Prayer ceremonies in August offer atmosphere, but heat makes lingering difficult. Spring mornings after Kinensai in February offer peaceful visits with few visitors.