Well, I've decided to contribute. Only one or two of these I've made myself, but I edited the rest to make my cities. Everything else is someone else's creation. You see, I copy pics of buildings or cities or other graphics into one large, white, bmp image. Then I cut'n'paste pieces from those cities, zoom in and edit the surrounding area pixel by pixel. Then I paste them together, kind of like how you buy lego sets and take them apart to make something else. So here are some of my faves (there will be more later):