Okunoin is the temple where Kobo Daishi the founder of Shingon Buddhism and one of the most revered persons in the religious history of Japan, rests in eternal meditation. It is considered one of the most sacred places in Japan. Okunoin is surrounded by Japan's largest graveyard. People from all over Japan, who wished to be buried close to Kobo Daishi, lie there, including former feudal lords, politicians and other prominent personalities. Their graves line the approaches to Okunoin for several hundred meters through the forest.