Since establishment of Kairyuoji in the Tenpyo period this miniature pagoda has been kept in Nishi Kondo (West Main Hall). It is a significantly important material to know not only the architectural technology of the Tenpyo period but also the development of architectural style of pagoda in Japan. Because of such importance, it was designated as a national treasure. This miniature is made in laborious detail as a superb art work. In Japan, it is common that a five-storied pagoda of temple is dozens of meters in height. However, it was very difficult for Kairyuoji to build such a high pagoda because its premises were limited. In spite of such narrow space, introduced there was a construction style of great building complex which was usually adopted by large scale temples. As a natural consequence of this dilemma, the five-storied pagoda must have been made small in size. It is supposed that two pagodas were made, and that one was installed in Higashi Kondo (East Main Hall) with the other in Nishi Kondo (West Main Hall) respectively.