ganghwa island yeonmijeong pavilion wolgotdondae fortress and river in incheon, korea

ancient architecture asia beautiful blue building city culture defense dmz east fight fortress ganghwa ganghwado ganghwagun green han heritage historic imjingang incheon island korea landmark landscape north old park pavilion river ruins sea site sky south stone summer town traditional travel village wall war watchtower wolgotdondae wolgotjin yeonmijeong