Achasanseong Fortress ( 아차산성 )

It is a fortress of the period of the Three Kingdoms of Korea located near Achasan area. The total length of the fortress is 1124m, and the height is about 10m. Number of relics was excavated during the excavation on the fortification of the Achasanseong Fortress. Goguryeo potteries were mostly found which shows that it was deeply related to Goguryeo. There still is a controversy on who built the Achasanseong Fortress located in the capital city of Baekje. This place has historical meaning because the Three Kingdoms had an intense war to take over the Han River area.