This is a really haunting image. Great work.
I'm of two minds about the suggestion to clone out the structure on the right. It's true that it draws the eye because it is a high-contrast object on the edge, but cloning it out might leave too large a stretch of negative space. An option would be to crop it out. I played with doing that, taking off a modest amount of the empty sky (same reason, but more so: no detail), and removing a very small amount from the left for a number of reasons. See whether you think cropping would help.
Either way, a great image.