Top half - good. Bottom half - dark on my calibrated monitor. Horizon feels tilted to the right slightly (I'm a nut about unintentional tilt). Maybe try moving the horizon line up (or down) a bit so as not to split the frame exactly in half.
Really cool, but the colors look so unnatural. Then again, I don't live near any iceflows. I wonder if this is there natural color and I'm just unfamiliar with it. Horizon slightly tilted. What's that thing in the center?
I hate to admit that I like this in spite of the over saturation in the sky (that I truly dislike). I think moving a little to the right so the building was to the right in the image while still retaining the ice on the right would have improved the image.