Changdeokgung (창덕궁) Palace is a UNESCO World Heritage site and one of the five grand palaces, along with Gyeongbokgung (경복궁), which I posted about earlier. Both were landmarks of the long-lasting Joseon (조선) Dynasty, which lasted from 1392-1897.
Changdeokgung is known not only for its castles, but its royal gardens. While we did not get to see these due to time constraints, the palace complex is huge in and of itself, and it was apparently more preferred to some kings over the main palace, Gyeongbokgung.
Above: notice the intricate detail of the painting as well as the net installed to keep birds out.
Above: a marker in the central courtyard marks where officials would line up for court meetings. This official is ranked #9 (九).