In the 19th century, it was a prosperous commercial port that was a hub for trade with the cities of Kyoto, Osaka, and Kobe, with so many houses belonging to merchants and shipping agents crowded together that people used to refer to the thousand houses of Mimitsu (Mimitsu-sengen). It fell into sharp decline with the advent of railroads. In 1986, it was designated as a national important preservation district for groups of historic buildings, and much of the 19th-century atmosphere, including traditional buildings, earthen walls, and stone pavements, remains.