I thought I'd add try putting an image onto my header to see how it looks. It's a picture of Darwen Tower, and the view is quite similar to the one from my bedroom window for the first 17 years of my life, although the tower was much further away from our house. The view from my current abode is much less impressive, unless you're a fan of looking in people's windows across the street.
It would appear I can use this image as long as I credit the original photographer, one Andy Pagett, whoever he may be. You can find the original image on Flickr.