1 colors are nice, focus is nice, light is nice but I don't like the composition. More bokeh and something hinting behind would be better. As is there is too much depth unless the picture is about the water and too high an angle. As a result there is no obvious subject and message.
2 has nice lines and depth. Depth is good here. Sepia is good too since the sky looks washed out. It might be better with a pillar closer in to give some feeling of depth.
3 has nice focus and depth. The sky color looks off and the building looks a bit flat in color. I would use shadows /curves to bring out the walls. For me the extreme low perspective could be better. Backing up with a longer lens might be better.
I like #1 for the colors, and nonobvious composition. #2 best in my opinion. Sepia is right and photo could be an architectural illustration. #3 seems a little bland, but that could be just me.
What's the interest in number one? Is it the juxtaposition of the muted blue water against the green leaves? As a composition it doesn't speak to me and the color contrast isn't enough for me. I like the composition of number 2. I also like number 3 best. The pastel blue is soothing and the composition of three different types of rectangular repeating shapes in the glass and brickwork appeals to me.
