Wow... going back to shoot under different lighting conditions.
Above and Beyond... 

Mandrake.

mscharff said
Adding some more contrast to the sky in the third shot may help... but I do like the last two...

ok, thanks for your opinion, I'll try it

but I was not quite happy with the last one, because of the shadows, so I went there today again (it was cloudy ) ) and this ist the result

Mandrake said
I really like the Tower shots, but somebody should fix the broken windows.

I worked the second photo a bit in lightroom if you care to see, Jose.

Mandrake

did you fix and clean the windows? ;o)

yes, I would like to see it

I worked the second photo a bit in lightroom if you care to see, Jose.

Mandrake