Koyasan includes "Kongobu-ji" that was built by Kukai in 816 as the principal stage for esoteric Buddhism on a 800m high mountain basin, "Jison-in" that was built as an administrative office to facilitate the construction and management of Kongobu-ji, "Niukanshofu-jinja" that was constructed as a guardian shrine to protect the Niukanshofu estate of Kongobu-ji and "Niutsuhime-jinja" that is situated in the Amano basin between Kongobu-ji and Jison-in which is closely connected to Koyasan and enshrines "Koya Myojin," who legend tells gave land to Kukai when he choose the compound of Kongobu-ji, and "Niu Myojin," who legend tells guided him, and all of them are connected by the pilgrimage route "Koyasan Choishimichi".

Having 1200 years of religious history, Koyasan is a mountain top religious city formed by 117 temples, combined with the surrounding steep mountain ridges and deep forests, it produces a cultural landscape related to faith.

Again, the Sacred Site Koyasan includes Kongobu-ji, Niutsuhime-jinja, Jison-in and Niukanshofu-jinja.

Kongobu-ji includes Garan Area, Okuno-in Area, Daimon Area, Kongosammai-in Area, Tokugawake Reidai Area and Honzan Area.