I'm guessing that's a "hole" in the building where the train goes through and creates nice depth. My only problem is that the distortion is too much and the print instead features the clouds and not the real subject which is the tracks and building. I'm not sure if this is a printing choice or a lens/camera choice. If it's fixable I would go back and let the tacks and the depth be a bit more defined. I'd still keep the mystery of the style but "clean it up" a little bit.