A 19-bay building west of the cloister
The Horyuji Temple Sankyoin and West Dormitory (法隆寺三経院及び西室, Hōryū-ji Sangyōin oyobi Nishimuro) in Ikaruga, Nara Prefecture, is an early Kamakura-period building west of the Western Precinct cloister, rebuilt in 1231, first protected on April 23, 1908, and designated a National Treasure on February 2, 1955.
One long north-south building 19 bays in length, it has the Sankyoin, a lecture hall, in its southern 7 bays and the West Dormitory in the northern 12. It is 5 bays deep at the front and 4 at the back, single-storey and gabled, entered from the gable end, with a tile roof. A ridge tag is designated with it.
From dormitory to lecture hall
When the temple was first laid out, this building stood closer to the West Corridor and was entirely monks' quarters. It burned between 1077 and 1081; the present building was rebuilt in 1231, according to the ridge-beam inscription. Ink marks under the columns suggest the rear dormitory section followed a little later, probably in 1268.
The Sankyoin takes its name from the three sutras lectured on here, the Lotus, Śrīmālā and Vimalakīrti sutras; the Japan Tourism Agency's commentary links it to the commentaries on those sutras attributed to Prince Shōtoku. The interior was refitted in 1305 and 1349 and repartitioned many times after that. The Showa-era restoration returned only the Sankyoin to its earlier form; the dormitory got its exterior back, but inside only the rows of columns were restored, leaving one open room.
A house-like hall and a dormitory front
The value of the Horyuji Sankyoin and West Dormitory lies in keeping two different building types in one structure. The Sankyoin is a residential-style hall recalling the wings of aristocratic shinden mansions, with railed verandas on three sides, an open deep porch and hinged lattice shutters across its five front bays. The dormitory, with its rhythm of doors and slatted windows (renji-mado), preserves the outward look of a dormitory built in two-bay units per monk.
Round columns sit on natural stones; the brackets are simple capitals with bracket arms and the eaves single-layer square rafters. The porch has broadly chamfered square posts with boat-shaped bracket arms and widely spaced rafters. Only the northernmost bay of the dormitory has an earth floor; the rest is boarded.
According to the Japan Tourism Agency's commentary, from May 16 to August 15 each year the monks hold the ango retreat in the West Dormitory, lecturing on the three sutras.
Visiting
The Horyuji Sankyoin and West Dormitory stands west of the Western Precinct cloister and can be seen from the paths. Step back and look along it at an angle to read the gable of the Sankyoin at the south end and the line of slatted windows running north. The interior is normally closed.
Hours, tickets and directions are on the Horyuji page.
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Q&A
- What is the Horyuji Temple Sankyoin and West Dormitory?
- One 19-bay building: the Sankyoin lecture hall in its southern 7 bays and the West Dormitory for monks in its northern 12.
- When was the Horyuji Sankyoin and West Dormitory built?
- It was rebuilt in 1231; the dormitory section may have followed in 1268.
- Where does the name Sankyoin come from?
- From lectures on three sutras, the Lotus, Śrīmālā and Vimalakīrti, linked to commentaries attributed to Prince Shōtoku.
- Can you go inside the Horyuji Sankyoin and West Dormitory?
- The interior is normally closed; the exterior can be seen from the paths.
- When did the Horyuji Sankyoin and West Dormitory become a National Treasure?
- It was first protected on April 23, 1908, and designated a National Treasure on February 2, 1955.
Basic Information
| Name | Horyuji Temple Sankyoin and West Dormitory (Hōryū-ji Sangyōin oyobi Nishimuro) |
|---|---|
| Location | Horyuji Sannai, Ikaruga, Ikoma District, Nara Prefecture |
| Designation | National Treasure |
| Year Designated | Important Cultural Property 1908/4/23 (Meiji 41, under the earlier law); National Treasure 1955/2/2 (Showa 30) |
| Quantity | 1 building (with 1 ridge tag) |
| Dimensions | 19 bays long; 5 bays deep at the front, 4 at the back; single storey, gabled roof, gable-end entry, tile roof |
| Owner | Horyuji Temple |
| Public Access | Exterior only (interior normally closed) |
References
- Agency for Cultural Affairs, Database of National Cultural Properties — Horyuji Sankyoin and West Dormitory
- https://kunishitei.bunka.go.jp/bsys/maindetails/102/2707
- Cultural Heritage Online — Horyuji Sankyoin and West Dormitory
- https://online.bunka.go.jp/db/heritages/detail/123514
- Japan Tourism Agency Multilingual Commentary Database — West Dormitory and Sankyoin
- https://www.mlit.go.jp/tagengo-db/R1-00205.html
Last verified: 2026.10.01
