That's exactly my thought.

I did the official USO tour when I was stationed in Korea...a long time ago. It went from the base I was stationed on. I vaguely remember stopping to eat somewhere, maybe a village or 2 where you could buy souvenirs. I do remember stopping at a train station, where the train was intended to keep going north. But even to this day, I have fond memories of the briefing before going into the conference room, walking around the conference table, seeing the North Korean soldiers, walking along the demarcation line before/after. My job in the Army was a Korean Linguist, and it was so tempting to talk to the soldiers there, but I kept my mouth shut. I was wearing my dress uniform (to wear civilian clothes would be considered a spy, and a combat uniform an act of war). There were several people taking pictures of our group from across the border.

I'm not really sure how close you can get to the border these days.... But on my first field exercise in Korea, I remember waking up one morning thinking, "who is playing their radio so loud?" I went outside and saw the enormous speakers blaring at us and the HUGE flag across the border. I think that was almost as eye-opening as visiting Pan Mun Jom. (well being tear gassed while trying to exit the Seoul subway was another clear memory too, but that had nothing to do with the North)