Hongdae, a neighborhood in Seoul, is home to Helloworld House 5n6. Gwanghwamun and Gyeongbokgung Palace are notable landmarks, and the area's natural beauty can be seen at Dongdaemun History and Culture Park and Namsan Mountain Park. Check out an event or a game at Gocheok Sky Dome, and consider making time for Lotte World, a top attraction not to be missed. Visit our Seoul travel guide