The Dongnae eupseong fortress is located on Dongnae-gu, Busan Metropolitan City, South Korea. Traditionally In Korea, a wall-fortress was erected in each town to keep it safe from invasions. In this area called Dongnae, there were some borough-states after the Samhan period (the 1st century BC), Geochilsan-guk, Chilsan-guk, Jangsan-guk and Dongno-guk states are told to have been included among these. It is believed that walls had been already built here at that time.
However, the first mention about the Dongnae eupseong that appears in historical records is that the wall was repaired in 1021, the twelfth year of the reign of King Hyeonjong of Goryeo Dynasty.