The head temple of the Ritsu sect and Toshodaiji Temple [Hokkongoin]. In the early Heian period (794-1185), the villa of Kiyohara Natsuno, Minister of the Right, was converted to Sogaku-ji Temple, and later Emperor Montoku renamed it Ten'an-ji Temple, and in 1130, Emperor Toba's middle palace, Waitenmon'in, restored the temple and renamed it Hokkongoin Temple. The garden, including the mountain in the precincts of the temple, is designated as a special national scenic beauty spot, "Hokkongoin Aojodaki Auspiciously Located on Mt. The garden is designed to imitate the Pure Land of Ultimate Bliss, and Seijo no Taki (Blue Woman's Waterfall) is believed to be the oldest waterfall masonry in Japan.