Einōsan Castle
Einōsan Castle (永納山城, Einōsan-jō) was an ancient castle (also known as a Korean-style fortresses in Japan (朝鮮式山城, Chōsen-shiki yamajiro) located in the city of Saijō, Ehime, Japan. Its ruins have been protected as a National Historic Site since 2005 with the area under protection expanded in 2007.