Introduction
Tucked away in the quiet residential neighborhood of Menoi in Toride City, Ibaraki Prefecture, the Sanbutsudo (Three Buddha Hall) of Ryuzenji Temple is a remarkable survivor from the Muromachi period. As the only nationally designated Important Cultural Property in Toride City, this thatched-roof hall offers visitors a rare glimpse into medieval Japanese Buddhist architecture and the enduring legends of the warrior Taira no Masakado. Its unique structural design—featuring mokoshi (pent roofs) on three sides—is unparalleled among surviving Japanese temple buildings.
Historical Background
Ryuzenji Temple is a Tendai-sect Buddhist temple whose origins are traditionally traced to 924 CE (Enchō 2), when the monk Den'yo Dai-Ajari is said to have established the Sanbutsudo as a place of practice. The temple's mountain name, Komeisan (Rice Well Mountain), derives from a legend that when Taira no Masakado visited the temple in 937 to pray for military fortune, rice miraculously gushed forth from a well in front of the hall—an auspicious omen that inspired Masakado to rebuild the temple's structures. According to another colorful tradition, Masakado's mother prayed at Ryuzenji for the blessing of a child, and Masakado himself was born on the temple grounds.
While these founding legends remain unverified, the current Sanbutsudo is dated to the early 16th century based on its architectural style. During a major dismantling and restoration between January 1985 and October 1986, a wooden tablet bearing an ink inscription dated to Eiroku 12 (1569) was discovered inside the building, confirming that the hall was standing by at least that year. The building was designated as a national Important Cultural Property on May 20, 1976.
Why It Was Designated an Important Cultural Property
The Sanbutsudo earned its designation for several compelling reasons. First, the building's original structural members are preserved in remarkably good condition, with original timber surviving even to the eave tips. The traces of earlier construction phases are clearly visible, making it an invaluable resource for understanding the building's evolution. Second, its unique floor plan—with mokoshi (subsidiary roofing) attached on three sides (both lateral sides and the rear), but not the front—is without parallel among surviving Japanese buildings. Third, the hall exemplifies the blending of Zen-style (zenshūyō) and Japanese-style (wayō) architectural techniques characteristic of the Muromachi period in the Kantō region. As such, the building is considered a precious example for tracing the transition from medieval to early modern architecture in eastern Japan.
Architectural Highlights
The Sanbutsudo is a single-story hall with a thatched hipped roof (yosemune-zukuri). Its main structure measures three bays across the front (approximately 6.4 meters) and four bays deep (approximately 7.3 meters). The interior is divided into an outer sanctuary (gejin) at the front and an inner sanctuary (naijin) behind it. Within the inner sanctuary stands a Zen-style shumidan (altar platform) upon which the three Buddha images that give the hall its name are enshrined: Shaka Nyorai (Shakyamuni), Amida Nyorai (Amitabha), and Miroku Bosatsu (Maitreya), said to represent past, present, and future.
The most distinctive feature is the mokoshi—a lean-to roof structure—that wraps around both sides and the rear, creating a double-eave effect. The bracketing system (kumimono) uses a combination of degumi and hirasan-to, with simple carvings on the kibana (nose-shaped bracket ends) and board-style kaerumata (frog-leg struts). No polychrome decoration was applied, lending the building a restrained, dignified character. During the 1985–1986 restoration, Sanskrit sutras were found written on structural members throughout the building, and an urn was discovered buried beneath the altar—remarkable finds that shed light on the spiritual practices of the hall's builders.
Visitor Information
The Sanbutsudo stands within the grounds of Ryuzenji Temple, which visitors may enter at any time free of charge. The exterior of the hall can be viewed freely, though a protective fence surrounds the structure, preventing access to the veranda or interior. For those wishing to see the inside of the hall, it may be possible to arrange a visit by contacting the temple in advance (Tel: 0297-78-8225). Special public openings of the hall are occasionally held—check with the Toride City Board of Education's Buried Cultural Properties Center (Tel: 0297-73-2010) for current schedules.
The temple is a short walk from Inatoi Station on the Kantō Railway Jōsō Line—approximately 10 minutes on foot (about 700 meters). A small free parking area is available for visitors arriving by car.
Surrounding Attractions
Toride City and its vicinity offer several worthwhile stops for cultural heritage enthusiasts. Chōzenji Temple, located near JR Toride Station (about a 5-minute walk from the east exit), is a Rinzai Zen temple also associated with Taira no Masakado. Its Sanseido (Three Generations Hall) is one of only five surviving sazaedo-style (spiral staircase) buildings in Japan and is designated as a prefectural cultural property. Nearby, the Former Toride-juku Honjin (Someno Family Residence), a designated cultural property of Ibaraki Prefecture and city historic site, preserves the oldest and largest surviving honjin (rest station for feudal lords) along the old Mito Kaidō highway. The Kirin Beer Toride Brewery offers factory tours for a change of pace, while the Kobori no Watashi river ferry on the Tone River provides a nostalgic river-crossing experience. For nature lovers, Kitauragawa Ryokuchi Park is known for its beautiful cherry blossoms in spring.
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Q&A
- What are the three Buddhas enshrined in the Sanbutsudo?
- The hall enshrines three Buddha images: Shaka Nyorai (Shakyamuni Buddha), Amida Nyorai (Amitabha Buddha), and Miroku Bosatsu (Maitreya Bodhisattva). These three figures are said to represent the past, present, and future respectively.
- What makes the architecture of the Sanbutsudo unique?
- The hall features mokoshi (subsidiary lean-to roofing) on three sides—both lateral faces and the rear—while the front remains open. This three-sided mokoshi arrangement is found in no other surviving building in Japan, making it a truly one-of-a-kind structure.
- Can visitors enter the Sanbutsudo?
- The temple grounds are open at all times and free of charge. However, the Sanbutsudo itself is surrounded by a fence and generally closed to interior visits. By contacting the temple in advance at 0297-78-8225, it may be possible to arrange an interior viewing.
- How do I get to Ryuzenji Temple?
- The nearest station is Inatoi Station on the Kantō Railway Jōsō Line. From there, it is about a 10-minute walk (approximately 700 meters). If driving, a small free parking area is available at the temple.
- What is the connection between Taira no Masakado and Ryuzenji Temple?
- According to legend, the 10th-century warrior Taira no Masakado visited the temple to pray for military success, and rice miraculously sprang from a well on the grounds—hence the temple's mountain name, Komeisan (Rice Well Mountain). Some traditions even claim Masakado was born at the temple.
Basic Information
| Name | Ryuzenji Sanbutsudo (竜禅寺三仏堂) |
|---|---|
| Designation | Important Cultural Property (National), designated May 20, 1976 |
| Construction Period | Early 16th century (Muromachi period); confirmed existing by 1569 |
| Structure | 3-bay front × 4-bay depth, single story, hipped roof (yosemune-zukuri), thatched (kayabuki), with mokoshi on three sides (board-roofed) |
| Sect | Tendai-shū (Tendai Buddhism) |
| Principal Images | Shaka Nyorai, Amida Nyorai, Miroku Bosatsu |
| Address | 467 Menoi, Toride City, Ibaraki Prefecture |
| Access | 10-minute walk from Inatoi Station (Kantō Railway Jōsō Line) |
| Admission | Free (exterior viewing) |
| Contact | Ryuzenji Temple: 0297-78-8225 / Toride City Buried Cultural Properties Center: 0297-73-2010 |
References
- 取手市公式サイト「（国指定文化財）竜禅寺三仏堂」
- https://www.city.toride.ibaraki.jp/maibun/bunkakatsudo/rekishi/shitebunkazai/ryuzenji.html
- 取手市観光協会「国指定重要文化財 竜禅寺三仏堂」
- https://www.toride-kankou.net/page/page000043.html
- 茨城県教育委員会「竜禅寺三仏堂」
- https://kyoiku.pref.ibaraki.jp/bunkazai/kuni-24/
- 文化遺産オンライン「竜禅寺三仏堂」
- https://bunka.nii.ac.jp/heritages/detail/177633
- Wikipedia「竜禅寺」
- https://ja.wikipedia.org/wiki/%E7%AB%9C%E7%A6%85%E5%AF%BA
- 文化遺産見学案内所「重要文化財｜竜禅寺 三仏堂」
- https://bunkaisan.exblog.jp/29415206/
- 茨城の旅「龍禅寺三仏堂（取手市）」
- https://www.ibatabi.com/toride/ryuu.html
Last verified: 2026.04.07