Watanabe no tsu used to be the center of water transportation system between Setouchi and Kyoto, the delivery platform of the sea and river, and also the ferry connecting the north and south side of Yodo-gawa River.
ここは瀬戸内と京都の間の水運の拠点で、海上・河川の船の積替え場であり、淀川を南北に渡る渡し場でもあった。