Château de Kashiwabara, Fortress ruins on Iruma River terrace in Sayama, Japan
Kashiwabara Castle sits on a terrace above the Iruma River and today consists of ruins with impressive fortification features. The site has dry moats on three sides that reach three meters deep and span between three to seven meters in width.
This fortress was built in the mid-1500s during a period of conflict between rival clans fighting for regional control. It fell under the influence of the Hojo clan, one of the most powerful families of the era.
An Inari shrine sits at the top of the ruins, showing how military sites and religious beliefs were woven together in medieval times. This mixing of defense and spirituality was common in Japanese castle communities.
You can freely explore the ruins and clearly see the defensive moats that show medieval Japanese fortification design. Wear comfortable walking shoes since the ground is uneven and exploration is entirely on foot.
After archaeological study, the excavation sites are intentionally refilled to protect the remaining structures from deterioration. This approach preserves the integrity of the fortifications for future generations.
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