In changgeong gung ,there is many sturcture. I will tell you about Honghwamunand sungmundang.

The hoghwamun is a maingate of the changgyeonggung. It is very splendid and only one eastward maingate. On hongwamun`s roof  there is japsang.The japsang is the small figures. people believe that japsang protectthe  building from the fire. The first one is Buddist monk,second one is a monkey,the third one is a pig and the fourth one is s water ghost.

Sungmundang was a palace for acadamic discussions.

Also King Yeongjo writte the letters on the signboard.

For this reason I like the changyeonggung.