Nice set of photos you've got here :thumbsup:
some general comments, no specific photo:
- Your image sizes are a little bit too small to really appreciate the photo and notice any details. May I suggest about 700-800 pixels on the long side?
- Some of your photos with strong contrast between buildings and sky, do have a hint of a 'halo' around the buildings. Do take note of that coz it does seem a bit unnatural/uncomfortable.