Illustrator for Map, Must be Inventive, Different, Quirky

I'm looking for someone to illustrate a map of a city (probably London, but could be a generic kind of city). There'll be quite a bit of text to include in the illustration. Preferably full colour. I have a clear idea of what I want, but you should be someone with ideas of your own and able to make suggestions. You will get a credit for your illustration on the final product, though I will own the illustration. The map will be on two sides of A3 that will be folded to A6. Any questions - please ask. Thanks.