DMZ + JSA
The Korean War, still frozen in place.
The 4 km buffer between the two Koreas. Tour-only access for the Joint Security Area, Third Infiltration Tunnel, and Dora Observatory. Bring your passport and dress smart-casual; jeans and slippers can be turned away. Imjingak peace park, just outside the restricted zone, is open without a tour and has the iconic Freedom Bridge.
Tour required. Public access is restricted, book a guided tour ahead of time. Imjingak peace park outside the restricted zone is open without a tour.