To batalay: Thank you
 

Hello Bulent,

Thank you for your comment. Nice to know that you were there for the lectures, I bet you enjoyed it. I was there in 2009 (for my very first visit) and I haven't known when the third tower was built, I didn't ask because I haven't known before until you told me, thanks for it! and you are right for the clock signaling 5:38pm, you have a very sharp eyes :)

Regards,
Ary