Sawara (佐原市 Sawara-shi) was a city located in Katori District, Chiba Prefecture, Japan. Sawara has been settled since prehistoric times, and has numerous remains of Jōmon period shell middens and Kofun period burial mounds. By the Nara period, it had developed as a port, and as a monzenmachi associated with Katori Shrine, and in the Heian period was a regional commerce center for numerous shōen in the area. During the Edo period, it was partly under the control of the Omigawa Domain, a feudal domain of the Tokugawa shogunate. Modern Sawara Town was created in 1898 and raised to city status on March 15, 1951 through merger with neighboring town of Katori and the villages of Kasai and Higashi-Oto. It expanded further on February 11, 1955 through annexation of the neighboring villages of Mizu