Seiganto-ji Temple of the Blue Waves, is a Tendai Buddhist temple in Wakayama Prefecture, Japan. In 2004, it was listed as a UNESCO World Heritage Site along with other locations, under the name "Sacred Sites and Pilgrimage Routes in the Kii Mountain Range". According to a legend, it was founded by the priest Ragyō Shōnin, a monk from India. The temple was purposely built near Nachi Falls, where it may have previously been a site of nature worship. Seiganto-ji is part of the Kumano Sanzan shrine complex, and as such can be considered one of the few jingū-ji (shrine temples, see article Shinbutsu shūgō) still in existence after the forcible separation of Shinto and Buddhism operated by the Japanese government during the Meiji restoration.