Saiin Garan of Horyu-ji Temple was once believed to have been built in the age of Prince Shotoku, but it is now considered, thanks to the development of research in the modern times, that the complex was destroyed by fire in 670 and rebuilt sometime between the late seventh and early eighth century.
法隆寺西院伽藍は、かつては聖徳太子の時代の建築と信じられていたが、近代における研究の進展の結果、670年の火災以後、7世紀末から8世紀初めの再建と考えられている。