Open since 2013, but not especially well known is Jeong-dong observatory based in the Seoul Metropolitan Government’s Seosomun Building 1 on the 13th floor offering a view over the neighbouring Deoksugung Palace and City Hall. Visiting is free and there is a café selling drinks and snacks so you can relax while you take in the view. Outside the building is located on the picturesque tree-lined Doldamgil (road) running alongside the palace wall, also to be found along here for culture lovers is Seoul Museum of Art and theatre. Only open on weekends and public holidays from 9 to 6.
City Hall Station Exit 4 Line 1, Exit 1 and Line 2 Exit 11 or 12