Columbia subject headings:
Harvard subject headings:
Chʻangdŏkkung (Seoul, Korea)
Chʻanggyŏnggung (Seoul, Korea)
Historic sites--Korea (South)--Seoul--History.
Korea (South)--Capital and capitol--History.
Kyŏngbokkung (Seoul, Korea)
Kyŏnghŭigung (Seoul, Korea)
Palaces--Korea (South)--Seoul--History.
Tŏksugung (Seoul, Korea)
Princeton subject headings:
Architecture--Korea--History--Chosŏn dynasty, 1392-1910.
Fortification--Korea (South)--Seoul--History.
Historic buildings--Korea (South)--Seoul.
Historic sites--Korea (South)--Seoul.
Palaces--Korea (South)--Seoul--History.