Kristy Shields has made an incredible map of Ravensgate, her picaresque Gothic fantasy city. She made it with hundreds of layers, so she can turn on and off things like building numbers, street names, neighborhood colors, parchment background, and so on–on a neighborhood by neighborhood basis!
She has helped me with a number of maps, but this is quite a magnum opus of Photoshop map-making. Check this thing out! (And tell her how cool it is here.)