1st: The colors are nice, but the photo really does nothing for me. Nothing technically wrong, I just have no emotional response to the photo.
2nd: This one I especially love. The colors are nice and composition are striking. The photo to me rides the fence between architecture and abstract. Nicely done.
3rd: I like this photo too, but the distortion is distracting. I see what you are tying to present, but maybe some software distortion correction could be needed? I'm not sure.
4th: I like this one overall as well. Not as strikign as the 2nd, but its still very good.
5th: Same with the 3rd. I think some software correction for the distortion might help. Its not as strong as the 3rd photo either at least to me.
Out of them all, I like the 2nd one the best, and then the 3rd. Both of these are special.
What camera and lenses did you take these with?