The composition is awesome and the concept is just amazing. I'm impressed because such images can be taken almost everywhere however original approach is very rare.
I'm close to Braineack's opinion that flat lighting is simple perfect for such composition. However I'd like to see more drama at the sky as it occupies half of the picture. On the other hand it is good that sky isn't taking whole attention for itself (so at overall I'm not sure about a drama thing, maybe it is just perfect as it is now?).
I love the precision, it is a great architectural shot in my opinion!