Yashiro Castle

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Built in the Sengoku period, Yashirojō was the residence of the Yashiro Clan, a branch clan of the locally powerful Murakami Clan. In 1553, the Yashiro, along with the nearby Shiozaki Clan, sided with Takeda Shingen. Takeda's advances this far into Shinano triggered a long series of skirmishes fought on and around Kawanakajima. In 1559, Takeda ordered the Yashiro to occupy Arato Castle, located across the valley to the south (it has been reconstructed in the present day). It is thought that Yashirojō was abandoned around 1560 with the construction of more important forts in the area such as Kaiźujō and Naganumajō further to the north and close to Uesugi territory.

Visit Notes

The ruins of Yashirojō are located on a small mountain overlooking the temple Manshōji. The mount gradually declines until it recedes into the northern plain. Earthworks, such as trenches and terraced pocket baileys, can be found right the way down the mount, starting from just above the plain. The main bailey is located at the very top. Features include karabori (dry moats), kuruwa (baileys), and dorui (earthen ramparts).


Castle Profile
English Name Yashiro Castle
Japanese Name 屋代城
Founder Yashiro Clan
Year Founded Sengoku Period
Castle Type Mountaintop
Castle Condition Ruins only
Designations Local Historic Site
Historical Period Pre Edo Period
Artifacts Kuruwa, Koshikuruwa, Dorui, Karabori, Horikiri, Ishigaki
Features trenches, stone walls
Visitor Information
Access Yashiro Station on the Shinano Railway; 10 minute walk
Visitor Information Free; 24/7; Mountain
Time Required 60 minutes
Location Chikuma, Nagano Prefecture
Coordinates 36° 31' 58.37" N, 138° 7' 50.48" E
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Added to Jcastle 2020
Contributor ART
Admin Year Visited Viewer Contributed

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30 months ago
Score 0++
Added pictures of ishigaki, taken in Autumn 2021