Historic Joseon dynasty palace; see the royal architecture and changing of the guard ceremony — visit early to avoid crowds. Check opening hours (usually 9:00–18:00; closed Tue).
Guided tour to the Demilitarized Zone highlighting Imjingak, Third Tunnel and Dora Observatory; book in advance and bring passport — tours typically start early and run 6–7 hours.
Korea's largest seafood market; sample fresh sashimi at market stalls and experience the lively fish auction area (markets open early to late afternoon).
Morning drive or express bus to Tongyeong or ferry to Geoje for island scenery and maritime culture; travel time ~1.5–2.5 hours depending on destination and route.
Guided Secret Garden tour within Changdeokgung palace offers serene landscaped gardens; tours run at set times (purchase combined palace+garden tickets and check schedule).
Allow 1–1.5 hours from central Seoul to Incheon Airport by AREX or 60–90 minutes by taxi depending on traffic; arrive 2–3 hours before international departure.