Oyama Castle
| Oyama Castle (小山城, Oyama-jō) was a Japanese castle located in what is now the city of Oyama, Tochigi Prefecture, in the Kantō region of Japan. In 1991 the ruins were proclaimed a National Historic Site by the Japanese government collectively with Nakakuki Castle and Washi Castle as the "Oyama clan castle ruins".[1] The castle is also known as Gion Castle (祇園城, Gion-jō) | ||||||
| Type： hirayama-style Japanese castle | ||||||
| Built： 1148 | ||||||
| Builder： Oyama Masamitsu | ||||||
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