Komiyama Yakata

History

Komiyama Oribenojō built Komiyama-yakata on the plain beneath Ibukajō as his fortified manor hall following Takeda Shingen's take-over of the area in 1550. The Komiyama Clan served as the castellans of Ibukajō under the Takeda Clan. Komiyama-yakata is unusual in a way in that it was built after the mountaintop castle it was attached to rather than before it. Komiyama-yakata was abolished in 1615. The yakata was in fact built on the site of the ancient provisional provincial headquarters of Shinano Province, called the Ibuka-gochō (井深後庁), which was constructed after the Mizukuma-kokufu (水汲国府) was destroyed by a landslide in 841. The Ibuka-gochō was replaced by the Ômura-kokufu in around 870. A 9th century map (Ibuka-gochō Haichizu 井深後庁配置図) of the gochō, showing its layout, was discovered, and this is replicated on a signboard at the site today. According to a post I saw on Facebook saying "I've just put up a sign for the Gochō", the signboard was put up in February 2020.

Visit Notes

The site of both the Komiyama-yakata and the Ibuka-gochō is now idyllic rice paddies and a grand old house with traditional architecture and stone walls, which is great compensation considering now no ruins remain of either site. Sometimes the Komiyama-yakata is called Komiyamajō but I don't know why. It was the kyokan attached to Ibukajō, and not really a castle in itself. Perhaps due to its association with the site of the Gochō which served as a provisional Kokufu (Provincial Capital) some people call it that? There is a nearly eight century gap in time separating the Gochō and the yakata though.

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Castle Profile
English Name	Komiyama Yakata
Japanese Name	小宮山館
Alternate Names	Komiyamajō / Ibuka-gochō 小宮山城・井深後庁
Founder	Komiyama Oribenojō
Year Founded
Castle Type	Fortified Manor
Castle Condition	Ruins only
Historical Period	Pre Edo Period
Features
Visitor Information
Access	Tazawa Station on the Shinonoi Line; 12 minute drive or epic hike (I cycled from Matsumoto)
Visitor Information	24/7; Free; Fields
Time Required	20 minutes
Location	Matsumoto, Nagano Prefecture
Coordinates	36° 17' 3.37" N, 137° 58' 58.15" E
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Admin
Added to Jcastle	2021
Contributor	ART
Admin Year Visited	Viewer Contributed

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