The results of excavation and research show that there were three Kon-do Halls (main halls of a Buddhist temple), which are Chukon-do Hall, Higashi-Kondo Hall, and Saikon-do Hall, at Kairyuo-ji Temple in the Nara period, although they were small-sized.
発掘調査の結果により、奈良時代の海龍王寺には、小規模ながら、中金堂、東金堂、西金堂の3つの金堂があったことがわかっている。