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Kawagoekan

The Kawagoekan (河越館) was a hirayama-style Heian period Japanese castle located in the Uwado neighborhood of what is now the city of Kawagoe, Saitama Prefecture, in the Kantō region of Japan. The ruins been protected as a National Historic Site since 1984.[1]
Type:  hirayama-style Japanese castle
Built:  Heian period  
Builder:  Kawagoe clan  

Kawagoekan  Click to go to Wikipedia