Danjo Garan（Junior high school students and above: 1,000 yen, elementary school students and below: 300 yen, preschoolers: free）: This is the first place Kobo Daishi built as a training center for Shingon esoteric Buddhism. It is the core of Mount Koya, with 19 buildings and pagodas, including the main hall and the Great Pagoda. Kongobuji: The head temple of the Koyasan Shingon sect, its vast grounds include the Banryutei rock garden, one of the largest in Japan, and rooms decorated with gorgeous sliding screen paintings. Okunoin: This is Mount Koya's most sacred site, home to the mausoleum of Kobo Daishi, and over 200,000 gravestones lined up among cedar trees over 1,000 years old. Daimon: This massive 25-meter-tall Niomon gate stands at the entrance to Mount Koya. Koyasan Reihokan: This museum houses precious Buddhist statues and calligraphy related to Mount Koya.