While I like the tones, I'm afraid it's a little too dark for me in the shadows. I'd like to see the structure on the left a bit better.
Reflection on the water is great, however.
The split toning on this is just right for me. I've spent more time looking at this photo than most, it almost feels like your trespassing. A thought provoking image.
Love the image but much too dark for my taste Alan. I can see what you were going for here however. The geometric shapes on the left side of the image are very interesting as well.