Ōmine Castle, Castle ruin in Nagano Prefecture, Japan.
Ōmine Castle stands in a mountainous area of Nagano Prefecture, featuring remaining fortifications, earthworks, and moats from its original structure.
The Kudō clan established the castle in 1274 during the Kamakura period, serving as a base for the Nagano clan who controlled the Anno and Anki Districts.
The castle represents the yamashiro architectural style of Japanese fortifications, which incorporated natural terrain features for defensive purposes.
The castle ruins received National Historic Site designation in 1982 and remain open for visitors interested in exploring Japanese medieval military architecture.
During 1360-1362, the castle withstood a continuous siege by Niki Yoshinaga, marking one of the longest military standoffs in medieval Japanese history.
Location: Nagano
GPS coordinates: 36.67560,138.17696
Latest update: March 25, 2025 11:53
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