The road between the political capital of Kamakura and the city of Chōshi on the Pacific coast and the mouth of the Tone River also passed through this location.
Chiba Tsunetane was an early supporter of Minamoto no Yoritomo and under the Kamakura shogunate was awarded most of Shimōsa and Kazusa Provinces.
However, after the fall of the Kamakura shogunate, the clan fragmented due to internal conflicts and lost most of its power and influence.
The Hōjō made efforts to strengthen the castle's defenses by increasing the size of its earthen ramparts and adding dry moats.
At present, the shape of central areas and portions of earthen walls survive and are maintained as a historical park.