Until the Meiji period (1868–1912), the jingū-ji were places of worship composed of a Buddhist temple and a Shinto shrine, both dedicated to a local kami. These complexes were born when a temple was erected next to a shrine to help its kami with its karmic problems. At the time, kami were thought to be also subjected to karma, and therefore in need of a salvation only Buddhism could provide. Having first appeared during the Nara period (710–794), jingū-ji remained common for over a millennium until, with few exceptions, they were destroyed in compliance with the Kami and Buddhas Separation Act of 1868. Seiganto-ji is a Tendai temple part of the Kumano Sanzan Shinto shrine complex, and as such can be considered one of the few shrine-temples still extant.

Buddhist temples or monasteries are the most numerous, famous, and important religious buildings in Japan. The shogunates or leaders of Japan have made it a priority to update and rebuild Buddhist temples since the Momoyama period. The Japanese word for a Buddhist monastery is tera (寺), and the same kanji also has the pronunciation ji, so temple names frequently end in -dera or -ji. Another ending, -in (院), is normally used to refer to minor temples. Examples of temple names that have these suffixes are Kiyomizu-dera, Enryaku-ji and Kōtoku-in.