DMZ - Imjingak
The S. Korean side is a tourist destination - there’s a small train, a bunch of cafes and souvenir shops, an amusement park for infants, and even a tiny museum. Flocks of people visit daily - not only S. Koreans, but people from all over the world (on my trip I met some Americans, Vietnamese, Chinese, and Japanese folk).
The N. Korean side, in comparison, is entirely void. Only few military establishments can be seen.