Shinran was a 13th century Buddhist monk. Although he was defrocked before dying at 89 in 1263, his association with Hōnen, the founder of Pure Land Buddhism, led to doctrines that established the Koshoji Temple. Since 1876, it has been the head temple of the Kosho sect of Jodo Shin Buddhism. Sanmon Gate is the entry. Although Koshoji Temple shares a moat with the adjoining Hongwanji Temple, they are not affiliated.