In the Joseon Dynasty, the center of Jeongui-hyeon was first established in Goseong-ri, Seongsan-eup, and then moved to the current Seongeup-ri in 1423. The construction of the citadel was carried out in five days despite the cold winter. It has a three-door structure: the west gate, the east gate, and the south gate, and has a T-shaped street network. The government office buildings were mainly located in the north, and a private houses were located in the south.,The factors that determine the location of town in Jeongui-hyeon include location factors, water factors, military factors, and geomantic factors. In addition, despite being a middle-mountainous region, the water was relatively abundant. In addition, since it is located inland, it is less invasive than the coast, and it is located in a propitious site where Hallasan Mountain's veins continue even from geomantic principles. Since Jeongui-hyeon has a relatively low status as a town, there are no various government buildings like Jejumok, and only the government buildings, for example, gaeksa, dongheon, hyangcheong, jilcheong, and military offices were built. There seems to have been little change in the location of gaeksa and donghan, and the location of other government buildings seems to have continued to fluctuate. Overall, the layout of the building was located on the north side of the east-west street network, and in the center was gaeksa symbolizing the kingship.