During the Bakumatsu period, nearby Kanagawa-juku was the location of the signing of the Convention of Kanagawa, which ended Japan’s national isolation policy and led to the normalization of diplomatic relations between the United States and Japan. The subsequent Treaty of Amity and Commerce led to the establishment of a treaty port for foreign commerce and settlement, which was initially stipulated to be Kanagawa. However, for security reasons, the actual settlement was established at neighboring Yokohama (present day Naka-ku). The Namamugi Incident, which led to the 1863 Anglo-Satsuma War, occurred in what is now part of Tsurumi Ward.