Also, remains of a chumon (an inner gate) with a base mound were found at the south of the octagonal tower, along with remains of a cloister facing south and mud walls with a roof surrounding the tower at the east and the west.
八角塔を中心に南側には基壇を持つ中門が検出され、南面回廊や東側・西側には築地が巡っていた塀跡も確認された。