Honmaru is roughly square with approximately 150 meters per side; there is an inner moat between Honmaru and Ninomaru and there is an outer moat around Ninomaru.
本丸は約150メートル四方のほぼ正方形であり、本丸と二の丸の間には内堀が二の丸の周りは外堀が作られている。