Hello Rob, thank you for your kind words. Maartje and I really enjoyed taking you around the city and its fine architecture!
As was already apparent during the week you all took some really great shots!
Here's some feedback on your images.
Valencia-1: Nice starburst
Overall a pleasing composition but I think I would prefer the image to be a bit lighter. Oh, and I would also retouch the two “scratches” in the bottom-right corner (and perhaps some other small specks) as they are quite distracting.
Valencia-2: Reflection.
For me this is definitely one of the best pictures of the week, very well spotted and taken!
Valencia-3: Good one of course (I think we all took something similar).
For me it would have been even better if there would have been a little more room at the bottom, now the curve touches the edge of the frame.
Valencia-7: Reflection in the water.
Nice, and with the cyclist in it you get a good feel of the enormous size of the building. Contrast is quite hard, not a problem at all, just different from your other images.
Valencia-1-2: Umbracle.
Composition is nicely symmetrical. Perhaps a bit too much of the planks in the foreground, but I'm not sure I dislike that, actually. HDR processing is a bit too strong for me though, and I also think the foreground is a bit too dark and “sad” looking.
Valencia-2-2: Science museum and Ágora.
Good composition but again too dark for me.
Valencia-2-3: Looking through the science museum.
Very good find! Makes you wonder what you are looking at, and whether or not it is just one image or two (or more) together.
Valencia-2-4: Lights
Sure, it is a “simple” image, but I like it! Colour-wise I find it a bit on the warm side, and I would definitely retouch the cigarette stub.