Site of Kanayama Castle

Kanayama Castle, known locally as Yukijo, takes its name from Yuki Yaheiji, a Christian retainer who received the domain in 1602 from Arima Harunobu, himself a Christian daimyo of Shimabara. When the Tokugawa shogunate executed Arima in 1612 on corruption charges and replaced him with his son Arima Naozumi, the new lord abandoned Christianity to align with the shogun's anti-Christian policies. Yuki refused to follow and was driven into exile rather than renounce his faith. What remains today is the site of the hilltop castle on the Shimabara Peninsula, a quiet ruin that holds an unusually layered history: political betrayal, Christian martyrdom, and the shifting loyalties of the Sengoku period's aftermath all converge in one small place.