Wikipedia
Naeuiwon
Naeuiwon(in Hangul:내의원, in Hanja:內醫院) was a palace pharmacy during Joseon dynasty. Literally, it refers to the place located at the palace for medical issues. Its other names were such as Naeguk(Hangul: 내국, Hanja:內局) and Naeyakbang(in Hangul:내약방, in Hanja:內藥房) of which terms also designated the place or room for treatment. In Changdeokgung palace, tourists can experience how royal physicians worked long before western modern medicine arrived at Korean peninsula.