This was another picture from my trip to Denver. I caught the vapor trail of a plane just as it was flying over the top of this skyscraper. Originally it was a color photo, but I felt that the simplicity of the shapes and lines became more pronounced in black and white. Staring at the corner of the building creates a bit of an optical illusion of whether the side of the building is coming towards the camera or away from it.
I wonder if it would look better with higher contrast.