buildings at Kangnam-ku, Seoul

I sketched two pieces of Kyobo Tower. The building was simple and solid in design and color. Walking down the street I found an interesting building with circles all the four sides from top to bottom. The diameter of the circle seemed to be near one meter. I counted the circles in frontal side : 16(horizontal) x 53(vertical).  The black poles in sidewalk were unique, which I couldn't see at Kangbuk. It was Media Pole. It provided several kinds of useful information about Kangnam map, game, taking photo, and so on. I took photo in front of it. After I typed my e mail address the photo was sent to me. I found the photo at my mail box. It was a special experience to me.