Deoksu-gung (덕수궁,德壽宮) , (subway City Hall). Located in downtown Seoul across the street from City Hall, Deoksu Palace vividly contrasts to the other nearby palaces like Changdeok Palace. Built during the mid-fifteenth century, the architecture of the buildings inside are heavily influenced with Western designs. Hence, you will see a fusion of both Korean and Western architecture. Closed on Mondays.