I was visiting the conference room in the demilitarized zone between South and North Korea when suddenly two North Korean guards showed up outside. It turned out a group of North Koreans was visiting the border at the opposite side. A lady in our group seemed very suprised to see the group of North Koreans at the other side and bursted out "Oh my God, what are they doing there!?" - "Probably the same thing as we do", I replied. Watching us watching them watching us...