The name of the area, Koenji, is derived from the name of this temple, Koenji Temple. It is known that Iemitsu Tokugawa, the third shogun of Tokugawa, used this temple when falconry hunting and the crest of Aoi Mitsuha derived from hunting can be seen on the temple grounds. The Ssangyong Torii in Koenji Temple is one of the three torii gates in Tokyo along with Shinagawa Shrine and Mabashi Inari Shrine.