[1] It's not known with certainty when the first fortress on this location was built; structures existed here from at latest the mid-Joseon period and were continually renovated over time.

[1][2] In 1707, the fortress was judged to be too large, and so it was split into northern and southern sections by a wall.

[1] There is a stele (금정산성 부설비; 金井山城 復設碑) recording the building of the gates.

Much of the stones used in the walls are from the immediate environment of the mountain, and thus change depending on the location.

[citation needed] Media related to Geumjeong Fortress at Wikimedia Commons