Wow, I'm surprised at how many of you pick the tree shot. I don't love it. Technically it leaves a lot to be desired. It's totally out of focus. I love depth of field blur, but this looks like hand shake blur. Yes, the concept is very artistic, but the execution was poor (Can you take another shot of that tree? It's worth a second try)
I like either #1 or, if you could up the contrast and boost saturation, the pier.