Bun-eiji Temple is a historic temple of the Chizan school of Shingon Buddhism in Iida, Nagano Prefecture. Its mountain name is Nangenzan. Nestled among the green hills in the southern part of Iida, the temple has served as a center of local Buddhist faith for centuries since its foundation during the Kamakura period.
The quiet temple grounds preserve numerous historic buildings and cultural treasures. Particularly important are the temple’s stone burial chamber and Gorinto five-ring pagoda, both designated as National Important Cultural Properties. Together, they provide a remarkable glimpse into the religious culture and craftsmanship of medieval Japan.
The history of Bun-eiji dates back to 1264, during the middle of the Kamakura period. According to tradition, the temple was founded at the imperial request of Emperor Kameyama by Chiku Nobusada, a local military governor and retainer of the Kamakura shogunate who controlled the Banno Estate in Shinano Province.
The founding abbot was Ryugo Ajari of the Rishoin branch of Daigoji Temple in Kyoto. From that time onward, Bun-eiji strengthened its relationship with Rishoin and also became an important site for prayers on behalf of the imperial court.
The temple still preserves eight imperial documents written in the name of the emperor or issued by the imperial court. These rare documents testify to the temple’s prestigious status during the medieval period.
Several members of the Chiku family also served as abbots of the temple. Among them, the sixth abbot, Sojun, received an imperial decree from Emperor Go-Hanazono and was granted permission to construct a hall dedicated to Dai-Gensui Myoo, further demonstrating the importance of Bun-eiji.
During its most prosperous period, Bun-eiji is said to have had a large temple complex containing twelve subsidiary halls and residences. Its impressive scale reflected the temple’s religious and political importance in the region.
However, in 1554, during the Sengoku period, the temple was destroyed by fire during a military campaign by the Takeda clan. The fire also destroyed nearby Kaminomine Castle.
Bun-eiji later began its recovery after receiving an official land grant of 70 koku from Asahi Nagaosa, the local governor of Ina serving under Tokugawa Ieyasu. Many of the buildings visible today were reconstructed from the middle of the Edo period onward.
The temple’s principal Buddhist image is Dai-Gensui Myoo, a powerful Buddhist deity traditionally associated with protection and the subjugation of evil. According to temple tradition, the statue was brought back from Tang China in 838 by the Japanese monk Jōgyō Risshi, who had traveled to China to study Buddhism.
The statue’s association with this early period of Japanese Esoteric Buddhism gives Bun-eiji an especially long and distinguished religious history.
After passing through the temple marker at the main entrance, visitors encounter the impressive Niten Gate, a hipped-and-gabled structure decorated with a traditional Chinese-style curved gable. A straight approach leads deeper into the grounds, where the bell tower and Amida Hall can be found among the trees.
A traditional earthen wall runs behind the bell tower, while the elegant Mukai-Karamon Gate stands quietly nearby. The gate is traditionally associated with its original role as an entrance for imperial envoys.
Inside the Niten Gate are statues of Jikokuten and Tamonten, two of the Four Heavenly Kings who protect Buddhist teachings. These statues were rescued and preserved when the main hall was destroyed by fire during the Tensho era.
The temple bell hanging in the bell tower is believed to date from the Kamakura period and is designated as a Nagano Prefectural Treasure.
The most distinctive features of Bun-eiji are its stone burial chamber and Gorinto five-ring pagoda. Both were created in 1283, according to an inscription bearing the name Chiku Atsuyuki, and were carved by Sugawara Yukinaga, a master stonemason from Nanto, the historic name for the Nara region.
The stone chamber and five-ring pagoda were jointly designated National Important Cultural Properties in 1930. Their excellent state of preservation and unusual combination make them particularly valuable examples of medieval Japanese funerary architecture.
The stone burial chamber is constructed from large flat stones arranged on three sides. Its roof consists of two stone slabs placed together and topped by a ridge stone, creating a remarkably sturdy structure.
A single stone slab forms the floor, and the Gorinto pagoda stands upon it. A hole in the floor was designed for the placement of remains, and an urn containing cremated remains was deposited inside the chamber.
An inscription carved into the front upper section records the date, the name of Chiku Atsuyuki, the name of the stonemason Sugawara Yukinaga, and the age of Atsuyuki, who was 62 years old at the time. Because the inscription clearly records the date and circumstances of its construction, it is an exceptionally valuable historical source.
The enclosed stone structure has protected the Gorinto from rain, snow, and other weather over the centuries, helping it retain its remarkably refined appearance.
The Gorinto is a distinctive type of Buddhist monument representing the ancient Indian concept of the five elements that make up the universe: earth, water, fire, wind, and space.
The five sections are stacked from bottom to top in different geometric forms: a square, circle, triangle, crescent shape, and jewel-like form. Each section bears a Sanskrit Buddhist seed syllable associated with one of the five elements.
The Gorinto at Bun-eiji retains the sophisticated proportions and elegant craftsmanship characteristic of the Kamakura period. It is regarded as one of Japan’s finest examples of this type of stone monument.
Gorinto pagodas accompanied by a dedicated stone burial chamber are extremely rare in Japan. Their exceptional historical value and excellent preservation make the Bun-eiji monuments important not only as religious objects but also as valuable subjects for the study of medieval Japanese history and architecture.
Bun-eiji is approximately a 13-minute walk from Dadaka Station on the JR Iida Line. Parking is also available, making the temple convenient to visit by car.
Surrounded by the quiet greenery of the Iida countryside, Bun-eiji offers a peaceful atmosphere away from the bustle of modern life. Visitors can explore the historic temple grounds while appreciating the connection between the natural landscape and centuries of Buddhist tradition.
Bun-eiji Temple has survived wars, fires, and centuries of change while continuing to serve as a place of Buddhist faith for the local community. Its historic buildings, ancient Buddhist traditions, and exceptionally well-preserved stone monuments reveal the depth of Iida’s cultural heritage.
For travelers interested in Japanese history, the National Important Cultural Properties of the stone burial chamber and Gorinto are especially compelling. They offer a rare opportunity to see the craftsmanship and funerary traditions of the Kamakura period in their original setting.
Set among the green hills of southern Iida, Bun-eiji is a rewarding destination for those who wish to discover a quieter side of Japan, where medieval history, Buddhist faith, traditional architecture, and nature continue to exist together.