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Castle in Shimada,Shizuoka

1.Suwahara Castle
Suwahara Castle (諏訪原城, Suwahara-jō) was a Sengoku period yamashiro-style Japanese castle located in the Kanaya neighborhood of the city of Shimada, Shizuoka prefecture, Japan.[1][2][3] The ruins have been protected as a National Historic Site since 1975.[4]
Wikipedia  detail