Reuters has put up a slideshow of photos of the Kangnam district.
The mood of the place is captured quite well and it’s worth a look. I used to take non-Koreans to bookshops such as the Kyobo store to get the real Kangnam feel.

Incidentally, one of the lesser UK newspapers (maybe it was Metro) used to run (I don’t know if it still does) a corner of “Is this you, or do you know this person?” drawing a circle around some passer by in the background captured in some photo of the day, and offering 50 squid or something like that. I feel like doing that with that wegukin in photo 13 sitting above the sign “A Twosome Place”.