Ruins of a Sengoku-period mountain castle in Nekoya, Numazu. This is said to be the starting point of Hojo Soun (Ise Shinkuro), from which he expanded his power before seizing Izu Province by driving out Ashikaga Chachamaru. Rising to prominence as a retainer of the Imagawa, Soun used this base to advance and later laid the foundations for the Later Hojo\'s conquest of the Kanto, making these ruin…

The castle that served as the starting point from which Hojo Soun expanded his power. An important stronghold that served as the foothold for his transformation from an Imagawa retainer to a Sengoku warlord.