According to Nihon-shoki, Empress Suiko regnant during her reign in the former half of the 7th century had a garden that had a Shumisen and Kure-hashi Bridge (a holy arch bridge which the gods crossed) and Empress Saimei regnant of the latter half of 7th century also had the same.
日本書紀によると、7世紀前半に在位していた推古天皇も宮の南に須弥山と呉橋のある庭を持っていたことや、7世紀後半に在位する斉明天皇についても同様であったとされる。