The 3rd highest building in Seoul is 63 ( floors ) building located on YeoUi - do(island ) which is located on the center of Han - gang(river ) which flows thoughout Seoul from east to west .
The 3 rd tallest building in Seoul is a 63- floor building located on YeoUi - do ( island ) which is located at the center of Han - gang ( river ) which flows throughout Seoul from east to west .