definitely the b&W cropped image. The first image is just interesting and very plain / normal feeling (for me). however the cropped B&W really changes that. It allows me to focus more on the interesting parts of the building, etc, and feels like it is portraying a historical feel. Much better in my book.
To me the B&W feels as though it strengthens the subject matter and directs the attention of the viewer better (no distracting sign colors,etc)