Janghang was a port from which grain was sent to Japan from the 1920s onward during the Japanese Occupation. The former granary in Janghang, which was built to store grain in 1931, when the Janghang Railroad Line was opened in the area, is regarded as a valuable source of information on the history of Korea in the early twentieth century when rice produced in Gyeonggi-do and Chungcheongnam-do provinces was systematically exploited by Imperial Japan.