Koyasan Okunoin The heart of Mt. Koya. Kobo Daishi (Kukai), the founder of Shingon Buddhism and one of the most revered persons in the religious history of Japan, rests here. Also, many prominent personalities' graves line by the approach to Okunoin for several hundred meters through the forest.Kongobu-ji TempleThe main headquarters for the Shingon Sect, which has 4,000 temples throughout Japan and more than 10 million followers worldwide. Visitors can see religious artifact, fusuma sliding door paintings, as well as a beautiful rock garden representing two dragons flying amongst the clouds.Koyasan Danjo Garan One of the two most sacred sites in Mt. Koya. In the 9th century, Mt. Koya was founded on this very ground. At that time, Kobo Daishi held a groundbreaking ceremony and then dedicated his life to the construction of Danjo Garan.Koyasan Reihokan Museum The Reihokan Museum was built to house and preserve the religious and cultural treasures of Koyasan. The museum's collection consists of thousands of religious works of art. The permanent exhibition displays statues, mandala (paintings representing metaphysical maps of the cosmos), and various other religious tools and paintings, the most notable of which is the scroll depicting the "Reclining Image of Sakyamuni Buddha on His Last Day". Koyasan Daishi Kyokai Daishi Kyokai is the administrative center of Shingon Buddhism, and is responsible for spreading the teachings of Kobo Daishi, the sect's founder. The complex consists of two buildings: Henjoden, a traditional temple hall, that was built in 1915 and is dedicated to Kobo Daishi, and a modern building for administration, lectures and training. An English information desk is available in this building. Visitors can participate in a few activities at Daishi Kyokai, such as receiving Buddhist precepts (jukai) or copying Buddhist scriptures (shakyo). No advance reservations are required.Tokugawa's Mausoleum The mausoleum's two identical buildings took twenty years to be completed and were built in the extravagant style of the early Edo Period with graceful sloping roofs, rich ornamentation, intricate carvings, lacquer and gold leaf. The two buildings stand side by side. The one on the right enshrines Ieyasu and the one on the left Hidetada.