It is said that in the Asuka period, Toyura no Miya Palace was located to the west of Asuka, was on the other side across the Asuka-gawa River, and Oharida no Miya Palace was in the region called Oharida (also known as Owarida) to the north of Asuka.
飛鳥時代には、豊浦宮は飛鳥の西方、飛鳥川を挟んだ対岸にあり、小墾田宮は飛鳥の北側の小墾田（小治田）と称される地域にあったとされている。