Hidden Message of Makkah Clock Tower Building Structure

There's something interesting behind the building structure of Makkah clock tower when the first time i saw it and was interesting to analyze. so i searched on google image then found some images of the clock.

to make me sure that i was not wrong in analyzing i used Microsoft Offline Maps in Windows 10 to take picture from satellite view.

to help me analyzing of the building structure i tried to make line on empty space of the building structure then i found it...,

....., what do you think ??