This study examines the spatial structure of Jeju-eupseong (Town-castle) in the Joseon Dynasty. The spatial structure of Jeju-eupseong has distinctive features and regional characteristics that are substantially different from typical eupseong in inland regions. This is mainly attributed to the geographical characteristics of the island and the administrative system with strengthened military functions. Jeju-eupseong displays a distinctive layout of major buildings and road system with a plaza located in its center in comparison with the ones found in inland regions. Gwandeokjeong Plaza in Jeju-eupseong served as the center of Jeju’s politics, administration, and culture during the Joseon Dynasty, and it, in the modernization period, has become an open public space in the heart of Old Downtown used for community gatherings. Therefore, this study aims to explore the historical background and distinctive spatial structure of Jeju-eupseong in comparison with eupseong in other parts of Korea. Moreover, the study examines the characteristics of Gwandeokjeong as a plaza that has not been dealt with in other studies of eupseong.

Abstract
1. 서 론
2. 제주읍성의 설치와 마정(馬政)
    2-1. 제주읍성과 마정(馬政) 관계
    2-2. 제주읍성의 설치와 확장
3. 제주읍성과 관덕정 광장
    3-1. 제주읍성의 공간구조와 관덕정
    3-2. 관덕정 광장의 기능
4. 결론
참고문헌

• 김태곤(원광대학교 건축공학과) | Kim Tae-Gon Corresponding Author
• 홍승재(원광대학교 건축학과) | Hong Seung-Jai