What Is a Soja Shrine?
The Ancient System Behind the Shrine
Under Japan’s ancient Ritsuryo system, provincial governors known as kokushi were responsible for performing important religious duties. These included visiting major shrines throughout their province and making offerings of sacred cloth and other ritual objects on the first day of each month.
However, provinces could cover large areas, and visiting every important shrine in person was difficult. From around the middle of the Heian period (794–1185), a system developed in which the principal deities of a province were collectively enshrined at a shrine located near the provincial government office, or kokufu.
These shrines became known as Soja, meaning a place where the deities of an entire province were gathered for convenient worship.
Soja Shrine of Kozuke Province is believed to have served precisely this function for ancient Kozuke Province. It once enshrined the Kozuke Province Register of Deities, known as the Kozuke-no-kuni Shinmei-cho, which recorded the shrines and deities of the province.
The surviving register is now designated as a Gunma Prefectural Important Cultural Property, making it an especially valuable historical document associated with the shrine.
Legendary Origins, War, and Reconstruction
A Shrine with Ancient Legendary Roots
According to the shrine’s traditions, its origins date back to the reign of Emperor Sujin, traditionally regarded as Japan’s 10th emperor.
It is said that Prince Toyoki-iri-hiko traveled to eastern Japan as part of efforts to pacify and govern the region. Inspired by the military prowess of Futsunushi-no-Mikoto, a deity associated with martial power, he is believed to have established a shrine to pray for victory and lasting military success.
Later, Iwatutsuo-no-Mikoto and Iwatutsume-no-Mikoto, regarded as the divine parents of Futsunushi-no-Mikoto, were also enshrined.
Destruction During the Warring States Period
During the medieval period, the shrine is believed to have stood at a place called Miyanobe, or Miyanabe, within Omi Castle. However, in 1566, during the conflicts between the Hojo and Takeda clans, the shrine was caught in the fires of war.
Much of the shrine’s buildings and many of its treasures were destroyed. The shrine was subsequently rebuilt at its present location in 1571.
The fact that the shrine survived centuries of warfare and continued to be maintained by local communities is an important part of its historical character. Its quiet grounds today offer a sense of continuity with the religious traditions of medieval and early modern Japan.
The Kozuke Province Register of Deities
A Valuable Record of Ancient Shinto
In ancient Japan, provincial registers of deities recorded the shrines to which provincial governors were expected to make offerings. At Soja Shrine, the Kozuke Province Register of Deities was enshrined as a sacred object until the Meiji period.
The surviving Soja edition of the Kozuke Province Register of Deities is now designated as a Gunma Prefectural Important Cultural Property. It provides valuable evidence of the religious landscape of ancient Kozuke and helps illustrate the role played by Soja Shrine.
The shrine’s main sanctuary is also designated as a Gunma Prefectural Important Cultural Property, further emphasizing the historical importance of the site.
Deities Enshrined at Soja Shrine
Main Deities
The principal deities enshrined at Soja Shrine are:
Iwatutsuo-no-Mikoto
Iwatutsume-no-Mikoto
Ukanomitama-no-Mikoto
Futsunushi-no-Mikoto
Susanoo-no-Mikoto
These deities represent different aspects of ancient Japanese religious traditions, including agricultural prosperity, protection, and martial power.
The Ten Guardian Shrines of Kozuke
The shrine also enshrines the deities of the Ten Guardian Shrines, or Chinju Jusha, listed in the Soja edition of the Kozuke Province Register of Deities.
These include:
Nukiboko Daimyojin — Ichinomiya Nukisaki Shrine
Akagi Daimyojin — Akagi Shrine
Ikaho Daimyojin — Ikaho Shrine
Iwamine Daimyojin — Kahasu Wakatsukune Shrine
Waka-Ikaho Daimyojin — Waka-Ikaho Shrine
Haruna Daimyojin — Haruna Shrine
Oiwai Daimyojin — Oiwai Shrine
Hokazuchi Daimyojin — Hokazuchi Shrine
Shitori Daimyojin — Shitori Shrine
Asama Daimyojin — Asama Shrine
The Deities of 549 Shrines
In addition to these deities, the shrine also enshrines the deities associated with 549 shrines of ancient Kozuke Province.
This remarkable concentration of deities reflects the shrine’s original function as a Soja—a place where the religious traditions of an entire province could be brought together and worshipped collectively.
The Shrine Grounds
The Main Sanctuary and Momoyama-Period Architecture
The present main sanctuary was constructed during the Keicho era (1596–1615) and retains distinctive characteristics of Momoyama-period architecture.
It is built in the three-bay Nagare-zukuri style, a traditional Shinto architectural form characterized by a gracefully extended roof over the front entrance. The combination of elaborate decoration and solid structural beauty makes the building an important example of historic shrine architecture.
The main sanctuary has been designated a Gunma Prefectural Important Cultural Property.
The Worship Hall
The present worship hall was rebuilt in 1843, during the late Edo period. It is designated as a Maebashi City Important Cultural Property.
The worship hall is where visitors traditionally offer prayers and where various shrine ceremonies take place.
The Kagura Hall
The shrine grounds also contain a Kagura Hall, an important space used for Shinto rituals and performances of kagura, a traditional form of sacred dance and music dedicated to the deities.
A Unique Collection of Deities
The five principal deities, the Ten Guardian Shrines, and the deities of 549 shrines together form an unusually extensive collection of sacred traditions.
This arrangement vividly demonstrates the original role of Soja Shrine as a religious center representing the entire province of Kozuke. Rather than being associated with only one local deity, the shrine preserves a broad tradition of worship connected with numerous communities and shrines throughout the region.
Ancient Trees and Seasonal Beauty
Centuries-Old Keyaki Trees
The shrine grounds are surrounded by impressive Japanese zelkova trees (keyaki), some of which are believed to be several hundred years old.
Six of the keyaki trees in the shrine’s sacred grove have been designated as Maebashi City Natural Monuments. Among them is a particularly impressive sacred tree with a trunk circumference of more than 8 meters.
These giant trees create a powerful atmosphere within the shrine grounds. In spring, fresh green leaves appear; in summer, the trees provide deep shade; in autumn, their foliage adds warm colors to the grounds; and in winter, the bare branches stand against the crisp, clear air.
Traditional Festivals Throughout the Year
Soja Shrine holds traditional Shinto ceremonies throughout the year. These include the New Year’s Day Festival, the Setsubun exorcism ceremony, spring and autumn festivals, purification rituals, and Shichi-Go-San visits for children.
Among the shrine’s most distinctive traditions are the Tsumegayu Okizumi-shiki, a traditional divination ceremony involving rice porridge and charcoal, and Daidai Kagura, a form of traditional sacred performance. Both have been designated as Maebashi City Important Intangible Folk Cultural Properties.
Major Annual Events
January 1: New Year’s Day Festival
January 6: Archery Ceremony
January 15: Tsumegayu Okizumi-shiki
Setsubun in February: Tsuina Exorcism Ceremony
February 20: Toshigoi Festival
March 15: Spring Grand Festival
June 30: Grand Purification Ceremony
June 30: Chinowa Sacred Ring Ritual
October 9: Autumn Grand Festival
October to mid-November: Shichi-Go-San celebrations
November 23: Labor Thanksgiving Festival
First day of the 11th month of the traditional lunar calendar: Welcoming of the Deities Ceremony
December 31: Grand Purification Ceremony
Cultural Properties
Gunma Prefectural Cultural Properties
Soja Shrine preserves a number of historically important cultural properties that have been officially designated by Gunma Prefecture.
Main Sanctuary: Designated on September 4, 1963, as a cultural property in the category of historic buildings.
Two Soja Shrine Kakebotoke: These Buddhist-Shinto devotional plaques are designated as cultural properties in the category of traditional crafts. Designated on December 23, 1974.
Unpan: A traditional bronze or metal ritual gong used to announce religious ceremonies. Designated on May 7, 1976.
Soja Edition of the Kozuke Province Register of Deities: A one-volume historic manuscript designated as a cultural property in the category of historical documents. Designated on December 23, 1974.
Maebashi City Cultural Properties
Several additional properties associated with the shrine have been designated by Maebashi City.
Worship Hall: Designated as an Important Cultural Property on April 16, 1993.
Soja Shrine Tsumegayu Okizumi-shiki: Designated as an Important Intangible Folk Cultural Property on April 16, 1993.
Soja Shrine Daidai Kagura: Designated as an Important Intangible Folk Cultural Property on September 24, 1973.
Six keyaki trees in the shrine’s sacred grove: Designated as Natural Monuments on April 21, 1997.
Access to Soja Shrine
By Train
Soja Shrine is approximately a 20-minute walk from Shin-Maebashi Station, served by the JR East Joetsu Line and Ryomo Line.
By Bus
Visitors can also take the Gunma Chuo Bus service operating between Maebashi Station, Tachikawa-machi-dori, and Shin-Maebashi Station West Exit.
Get off at either the Soja Shrine Minami Bus Stop or the Myojin-mae Bus Stop. The shrine is only a short walk from either stop.
A Historic Shrine Connecting Visitors with Ancient Kozuke
Soja Shrine of Kozuke Province is a remarkable place where the history of Gunma and the religious traditions of ancient Japan come together.
Its role as a provincial Soja, its extensive collection of enshrined deities, historic architecture, centuries-old trees, traditional festivals, and valuable cultural properties all reflect the long history of Kozuke Province.
For visitors from overseas, the shrine offers more than a peaceful place of worship. It provides an opportunity to learn how ancient Japanese provinces were organized, how Shinto traditions developed, and how the deities of numerous local communities came to be represented at a single shrine.
When visiting Maebashi, a stop at Soja Shrine is a rewarding way to experience the deep historical and spiritual heritage of Gunma in a quiet and atmospheric setting.