Have a look around Original Panmunjom
Original Panmunjom in JSA(Joint Security Area)
It is the only spaces that North and South Korea share together. Apparently, it is a neutral place that both administrative jurisdictions can’t cover. In particular, the meeting room of the Military Armistice Commission literally crosses the border, so it is half in North Korean and half in South Korean space. When travelers from South Korea come to this space, they should lock the inside door. Then, this space has a temporary new character, and vice versa. Also, it can take on a different character when officials from both North and South Korea have a meeting.