Nishiyama Castle (Chiisagata)

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ChiisagataNishiyamajou (2).JPG


It is thought that Nishiyamajō and related sites were built by the Unno Clan around 1330 to protect their territory from the encroachment of the Murakami Clan to the west.

Visit Notes

There are a series of fort sites on the west side of the Sumiyoshi Valley believed to predate the Murakami Clan forts. These earlier sites, of which only vague suggestions remain in the shape of the hillsides, are thought to have been built by the Unno Clan. They are at lower elevation than the Murakami sites and seem to have been built much more crudely. The first fort of these is Nishiyamajō. It shares the same mountain leg as Nakanojō and Kemijō, located further up, and these three may be grouped together as the Nishiyamajō Fort Group. There are explanatory boards at each of the sites. Further to the north is another site, Shirayamajō.

See related sites: Chiisagata Nakano Castle, Chiisagata Kemi Castle, and Chiisagata Shirayama Castle.

  • Main bailey peak

Castle Profile
English Name Nishiyama Castle (Chiisagata)
Japanese Name 小県西山城
Founder Unno Clan
Year Founded 1330
Castle Type Mountaintop
Castle Condition Ruins only
Historical Period Pre Edo Period
Artifacts Kuruwa
Visitor Information
Access Ueda Sation on the Shinano Railway; bus to Kamishina; 20 minute walk to Sumiyoshi
Visitor Information 24/7 free; mountain
Time Required 10 minutes
Location Ueda, Nagano Prefecture
Coordinates 36° 25' 18.62" N, 138° 17' 2.11" E
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Added to Jcastle 2022
Contributor ART
Admin Year Visited Viewer Contributed
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