Stone Walls, Hirao Family Residence

The Morio River runs straight through the grounds of the Hirao Family Residence in Toyooka, dividing the roughly 4,000-square-metre estate into a northern and a southern half joined by a stone bridge. The Hirao served as ogyoji, or great village headmen, in the Edo period and ranked among the leading landowners of the Tajima region; some twenty buildings, large and small, still stand within their walls.

The Structure Itself

The Morio River splits the Hirao estate into a northern and a southern half, and the stone walls built along both banks are what hold that arrangement together. About 1.5 metres high and running some 148 metres in total, they turn the river from an obstacle into the organising feature of the whole compound.

Look closely and the masonry reads like a record of long upkeep. Dressed blocks of granite and basalt are laid in places as diagonal tanizumi coursing, elsewhere as level nunozumi, and in yet others as rough uncut nozura fieldstone, the mix betraying repeated repairs across generations. The result is the estate's most distinctive interior view: the main house seen across its own river, framed by stone.

Why It Was Registered

The estate was registered as a Tangible Cultural Property in 2008, recognising how completely the framework of a great landowner's compound, its main house, quarters, storehouses, walls and waterworks, survives here as a single ensemble. Each registered element earns its place less as a solitary monument than as one part of that larger, coherent whole.

Seeing It Today

The Hirao Family Residence remains a private home and is, as a rule, not open to the public. Visitors should not expect interior access, and the family's privacy asks for a respectful distance. The exterior and its river setting can be appreciated from the public road nearby, and travellers to this corner of Tajima can pair a passing look with the region's more accessible sights: the willow-lined hot-spring town of Kinosaki Onsen, the old castle town of Izushi with its soba and clock tower, and the columnar basalt cliffs of Genbudo Park along the Maruyama River.

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Q&A

QCan I go inside the Hirao Family Residence?
ANo. The residence is privately owned and generally closed to the public. You can view its exterior and river setting from the adjacent public road, but please respect the residents' privacy.
QGranite and basalt in one wall, why?
AThe walls have been repaired many times over the centuries using locally available stone. Basalt in particular is a signature stone of this part of Tajima, where the columnar basalt of Genbudo lies nearby, and the mix of stones and coursing styles records that long history of upkeep.
QHow old is this part of the estate?
AIt dates to the late Edo period (1751–1829), with Meiji and early-Showa repairs. The estate as a whole was built up across generations, from Edo-period storehouses through the 1896 main house to early-Showa additions, so its elements span more than a century.
QWhat else can I see nearby?
AToyooka offers Kinosaki Onsen for its hot springs, the castle town of Izushi for soba and historic streets, and Genbudo Park for its dramatic columnar basalt, all within easy reach of the Morio district.

Basic Information

NameStone Walls, Hirao Family Residence (平尾家住宅石垣)
Location958 Ando, Morio, Toyooka, Hyogo Prefecture
DesignationRegistered Tangible Cultural Property (building)
Registered7 March 2008 (gazetted 19 March 2008)
Count1基
StructureStonework; length 148 m
Periodlate Edo period (1751–1829), with Meiji and early-Showa repairs
Ownership / AccessPrivately owned; not open to the public

References

National Database of Designated Cultural Properties, Agency for Cultural Affairs — 平尾家住宅石垣
https://kunishitei.bunka.go.jp/bsys/maindetails/101/00006899
Cultural Heritage Online — Main House, Hirao Family Residence
https://bunka.nii.ac.jp/heritages/detail/186783
The Tajima (Tajima Encyclopedia) — Hirao Family Residence
https://the-tajima.com/spot/393/

Last verified: 2026.07.02