Onjo, the progenitor of Kingdom Baekje, first settled in Wiryeseong Hanam. But exact location is still unknown. One thing for sure, however, is that Pungnaptoseong Fortress, Mongchontoseong Fortress, Bangidong Ancient Tombs of Baekje, Seokchondong Stone Mound Tomb of Early Baekje are the remains of Baekje. Pungnaptoseong Fortress faces Hangang River to its west and connects to Mongchontoseong Fortress to the south. To the northwest faces Achasanseong Fortress over Hangang River and far to the so...