Gyeongbokgung Palace

One of Seoul's most visited attractions, Gyeongbokgung draws crowds of visitors dressed in hanbok, traditional Korean attire, strolling the grounds and gathering to watch the royal guard changing ceremony at the palace gate — a 20-minute performance at 10am and 2pm, with a shorter 10-minute version at 11am and 1pm, held daily except Tuesdays. Wearing hanbok gets you free admission.