Add to ORKG大坂城外堀に面する内側城壁と六番櫓を､現在の上町筋方面(外堀南西角)より望む｡この高石垣に見られる勾配は､石材を規格化することによる新しい技法で､元和･寛永年間に登場した築城技術の特徴を示している｡The inner castle walls and sixth turret facing the outer moat of Osaka Castle, seen from the direction of the present Kamimachi Suji (southwest corner of the outer moat). The new technique used to build the slope in the high stone walls by standardizing the stones is a feature of castle construction which started in the middle of the Edo Period