The tower over Nichiren's grave
The Minobusan Kuonji Sobyo Mausoleum Tower (身延山久遠寺祖廟塔, Sobyōtō) is a mausoleum tower of 1942 standing over the grave of Nichiren in the Nishidani valley at Minobusan Kuonji in Minobu, Minobu Town, Yamanashi Prefecture, registered as a Registered Tangible Cultural Property on 2018/05/10.
The temple calls the grave the Sobyo, "the founder's tomb", or simply the Gobyo, and the structure raised over it the Sobyo tower. Inside stands the original gorinto, a five-part stone memorial, that holds Nichiren's relics; part of his remains rest in a vault below ground.
Tradition holds that the 5 characters of Myoho Renge Kyo, the title of the Lotus Sutra, cut into the gorinto were brushed by Nissho or by Niko, two of his senior disciples. The temple gives both names.
Marble, stone and a spire
According to the Agency for Cultural Affairs, the Minobusan Kuonji Sobyo Mausoleum Tower is octagonal in plan and rises from a base of rough-laid stone ringed by a stone fence. Its body tapers as it climbs and is faced in marble; the capstone curves upward at the eaves and carries a sorin, the ringed spire that tops Buddhist pagodas. At 12 metres high, it is in the agency's words a grand mausoleum.
The record is not consistent about what lies under the marble. Its structure field lists a single-storey stone building with a footprint of 11 square metres and a stone fence, while the commentary in the same entry describes reinforced concrete. What you see from outside is marble and stone; the core is described 2 different ways.
What to look for, and visiting
Visitors pray to the Minobusan Kuonji Sobyo Mausoleum Tower from the worship hall directly in front of it, and from there the octagonal shaft and its spire rise straight ahead. The temple website does not mention any public access to the gorinto inside.
Kuonji asks visitors not to smoke or walk dogs in the sacred grave precinct. Photography inside halls is generally not allowed, but you may photograph freely outdoors. Hours and directions for the temple are on the Minobusan Kuonji page.
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Q&A
- What is inside the Minobusan Kuonji Sobyo Mausoleum Tower?
- The original gorinto stone memorial of Nichiren's grave, with part of his remains in a vault below.
- When was the Sobyo Mausoleum Tower built?
- In 1942.
- How tall is the Sobyo Mausoleum Tower?
- The Agency for Cultural Affairs gives its height as 12 metres.
- Is the Sobyo Mausoleum Tower stone or concrete?
- The agency's record lists stone in its structure field but describes reinforced concrete in its commentary; the tower is faced in marble.
- When was the Sobyo Mausoleum Tower registered as a cultural property?
- On 2018/05/10.
Basic Information
| Name | Minobusan Kuonji Sobyo Mausoleum Tower (身延山久遠寺祖廟塔) |
|---|---|
| Location | 3628 Minobu, Minobu-cho, Minamikoma-gun, Yamanashi Prefecture |
| Designation | National Registered Tangible Cultural Property (structure); registration number 19-130 |
| Year Designated | Registered 2018/05/10 (Heisei 30) |
| Quantity | 1 building |
| Dimensions | Recorded as single-storey stone (commentary: reinforced concrete); octagonal; footprint 11 square metres; 12 metres high; stone fence |
| Owner | Minobusan Kuonji (religious corporation) |
| Public Access | Exterior only (viewed from the worship hall; no photography inside halls) |
References
- Database of National Cultural Properties (Agency for Cultural Affairs) — Sobyo Mausoleum Tower
- https://kunishitei.bunka.go.jp/heritage/detail/101/00012354
- Minobusan Kuonji official site — Guide to the grounds (Japanese)
- https://www.kuonji.jp/precincts/
- Minobusan Kuonji official site — Gobyosho, Nichiren's grave (Japanese)
- https://www.kuonji.jp/precincts/gobyosho/
- Minobusan Kuonji official site — FAQ (Japanese)
- https://www.kuonji.jp/faq/
Last verified: 2026.10.01
