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Haha, not all angles look that awesome, but on a very sunny day it does shine death rays!

Actually, it says GT on the side.

I looked it up ~ https://en.m.wikipedia.org/wiki/Seocho_Garak_Tower_East

Seocho is the actually district name (gangnam proper is across the street).

It is Garak Tower East. I do know a Garak Market is South and nearby. But unsure of the precise significance.

To me gt will always mean ~ grand turismo.