Shimoyama Yakata




Shimoyama-yakata was part of a series of fortfications at the foot of the Hyakusaijijō temple-castle mount. They may predate Hyakusaiji Castle. The Ōmi-no-Kuni Komazarae (淡海国木間攫), found in the Hikone Kyūki Shūsei (彦根旧記集成), mentions Masujima Sanai, a magistrate appointed by Rokkaku, as a castellan.

In addition to the Shimoyama-yakata there is a Shimoyamajō and a Shimoyamamoto-yakata / Shimoyamahonjō. The latter indicates a main residence and the former a better fortified redoubt area on higher terrain. The site of what is now Hiyoshi-jinja is thought to be that of Shimoyamajō.

Visit Notes

Shimoyama-yakata is a medieval yakata site not far below Hyakusaijiō. Now part of a quaint village, I found no ruins or marker here (dangling participle).


Castle Profile
English Name Shimoyama Yakata
Japanese Name 下山館
Founder Masujima Sanai
Year Founded Sengoku Period
Castle Type Fortified Manor
Castle Condition Ruins only
Historical Period Pre Edo Period
Visitor Information
Access Yōkaichi Station on the Ōmi Rail Kotō-Ōmi Line; 15 minute drive or 110 minute walk
Visitor Information Private Property
Time Required 10 minutes
Location Higashi-Oumi, Shiga Prefecture
Coordinates 35° 7' 26.18" N, 136° 16' 40.08" E
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Added to Jcastle 2021
Contributor ART
Admin Year Visited Viewer Contributed

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