Sampō-ji is a Shingon Buddhist temple that was founded in 1394 (the first year of Ōei) by Kōson Hōin of Daitoku-ji Temple in Kamakura. The Benzaiten was enshrined on the small island located in Sampō-ji Ike pond. To the south of Sampō-ji Temple there was the ruins of Shakujii-jō, a castle of the Toshima clan, which used to control Shakujii in the last years of the Kamakura Shogunate. Hikawa Myōjin is the shrine which served as a guardian deity of Shakujii Castle.