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Kanayama Castle

Kanayama Castle (金山城, Kanayama-jō) was a Sengoku period yamashiro-style castle located on top of Mount Kanayama in what is now the city Ōta, Gunma Prefecture, Japan. The site has been protected as a National Historic Site since 1990.[1] The castle was also known as Ōta Kanayama Castle or as Nitta Kanayama Castle.
Type:  hilltop-style Japanese castle
Built:  1469  
Builder:  Iwamatsu clan  

Kanayama Castle  Click to go to Wikipedia