Seigakuin appears in the record of 1689. It was used as Terakoya from the late Edo period to early Meiji period. The name of Terakoya was "Seikodo." The famous explorer Ekei Kawaguchi who is the first traveler crossed over Himalayas studied at this Terakoya.
It was also the temple of Shugendo, the religion of the sacred mountains. The room of Fudo is very unique because the temple itself is very small and fit with the small city. It displays the textbooks, the Japanese abacus and Suzuri. All of them including desks were actually used fro the class.