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Castle in Izunokuni

1．Nirayama Castle
Nirayama Castle (韮山城, Nirayama-jō) is a hilltop castle, now largely ruins, built by Hōjō Sōun in the Izu Province in 1493.[1][2] Originally, Sōun had his main castle at Kōkokuji Castle.[3] After building Nirayama Castle, Sōun made it his main castle and kept on living in the castle to his death in 1519.[4]
Wikipedia  detail