This is a good picture with nice colors. An other framing will have more impact in my opinion. I would crop nearly all the sky keeping only the bricks line. A little crop of the foreground to simplify a little more the picture taking out nearly all that strange triangle would be fine for me. I don't know if you would like it this way...
This is really impressive. I agree with akarui's suggestion for the crop, which I think would strengthen the impact. Did you take more of the same place? I'd like to see other shots, too.
This is a stunning photo. I love the play of light and shadows as well as the colour. But you have captured a mood here -- I think this photo portrays a feeling of strength and sorrow. Excellent work.