Composition: The composition on this photograph is outstanding. Your use of diagonal line gives a real strength to the composition
Colors: Wow, I can not admire the colors enough. They are absolutely beautiful!
Lighting: The time of day that this was taken must have been late afternoon or early evening as the light seems so magical. The sky seems to glow. Just wonderful.
Technical Quality: I am not really a person to give you great criticism on the technical aspects of your photograph, but Ii do notice the slight darkening towards the corners. I am not sure what caused this, but I might guess it is a function of your lens, or filter. Its is not overly distracting, but something I did notice.
Meeting Challenge: I have read some of your other comments and I have to agree that zI do not see a hidden face here. You might see a face, but for the masses of voters on DPC, it might be just a little too subtle.
Overall: Overall this is a beautiful photograph and well executed. The biggest problem I have with it is the inability to find a face even after looking for a long time. Well done in all other ways.
I may have a really good imagination cause nobody else seems to see it, but I see the two box-like eyes and a big grin full of teeth (the windows), yeah? Cool pic, love the tone.
Please tell us where the hiden face is to be found once the challenge is over. I have been looking at this image for quite some time now and can't find it. Are you referring to people working inside the building or something?
Quite a stark photograph which symbolizes the emptiness within. I like the toning you performed on this shot. Everything appears to be focused well, and the overall composition is pleasing.
If it was in a different challenge, this entry would probably fare better.