In addition to Prince Shotoku, there is a mausoleum (Sankotsu-byo) where his mother, Empress Anahobe no Hashihito, and his wife, Kashiwabe no Oiratsume, are buried. , Eifukuji Temple is said to have been built by Emperor Suiko in order to protect it, and a large temple was constructed by Emperor Shomu in 724. Also known as the ``Top Prince,'' it was used in the Heian period, when worship of the Prince was popular, along with the ``Middle Prince'' of Nonaka-ji Temple in Habikino City, and the ``Lower Prince'' of Daisho Shogun-ji Temple in Yao City. He was visited by many people as the ``Kawachi Three Princes.'' At the end of the Sengoku period, the temple was burnt down by Oda Nobunaga, but in 1603, Toyotomi Hideyori rebuilt the Seiden. Since then, the Tahoto Pagoda and other buildings have been rebuilt one after another, and are still in their current state (both designated as important cultural properties of the country). Every year on April 11th and 12th, a ``Mahayana Ceremony'' is held in commemoration of Prince Shotoku's death anniversary, and under the cherry blossoms in full bloom in the shrine grounds, there is a memorial service, tea ceremony by the head of the Omotesenke family, chai lantern goma memorial service, and mochimaki. etc. will be done.