I thought "Why not make something different from my usual regional/continental/world maps?". Well, here's the result. Or, better said, a part of it, as I'm still working on a painted , more natural looking version of this city, which will probably not become a map.
Outlines drawn with free hand (fine liner 0,1 and 0,3 on white paper), scanned, coloured and textured in PS, labelled (and border deco) in Illustrator.
EDIT: added the painted version as comparison