Matsuyama Castle (松山城, Matsuyama-jō) is a "flatland-mountain"-style Japanese castle that was built in 1603 on Mount Katsuyama, in the city of Matsuyama in Ehime Prefecture, Japan. The castle is one of twelve Japanese castles to still have its original tenshu. The castle has been protected as a National Historic Site since 1952. It is also called Iyo-Matsuyama Castle to disambiguate it from Bitchū Matsuyama Castle in Okayama. Tsuyama Castle and Himeji Castle were also built in a similar style around the same time period.
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