Gion worship (祇園信仰, Gion shinkō) is a Shinto cult. Originally it revolved solely around Gozu Tenno, but during the Separation of Shinto and Buddhism of the Meiji era the government mandated it shift to revolving around Susanoo.
The main shrines are Yasaka Shrine in Kyoto, Hiromine Shrine in Hyogo Prefecture, and Tsushima Shrine in Aichi Prefecture