Sabi Fortress also is known by the names Busosanseong, Sabiseong or Soburiseong Fortress, it consists of the inner fortress divided by roads centered on the royal palace, a defensive fortress called "Buso Mountain Fortress", and outer walls surrounding the palace. The inner part of the fortress involves 5 district area, where the existence of district was verified through rocks, roof titles, and wooden tablets etched with the name of administratine areas. It is also assumed that the royal palace of Baekje had been located on this site.