...but better late than none... :) Dear Gunsan, the image in the first pic shows the metal frames, bars and spikes of the windows which surround the borders of a terrace high up on a tower, the tower being the part of a large shopping mall. Up to the level of the terrace, the tower has no floors; above the terrace is another round floor that is occupied by a large restaurant and a bar. Why so much metal spikes..? Because before them, there happened to be some (2 or 3) suicide attempts, and one unfortunate commit... ...And, the management took care of it..!! Let me post another work, another revisited one, to show you a little more detail...