Stephen, thanks for your interesting comments and suggestions. I tried the B&W, but it just doesn't work for me this time. OTOH, I warmed the white balance, and you are just sooo right. Thanks again.
Stephen, the spires are very tall indeed. Including them fully would have been more "faithful", but would have provided a much smaller and more distant picture, without the profusion and complexity which I wanted to show. Besides, the main spire just wasn't there before the restoration/embellishment of the late XIXth century, when Viollet le Duc believed in not only restoring, but also "improving"...
Any reason for cutting off the tops of the spires? Not 100% convinced about the White Balance, but I have not seen the building in the flesh. Looks more the colour of concrete than stone as it stands. If this was shot as a RAW Frame then you might look at "warming" it up a fraction. As a file for B&W conversion this is not as important. Obviously if you shoot JPEG's then you are a bit stuck. Stephen