Very nice JT. Did you create those house shapes in GIMP, or did you use Inkscape or some other vector program? I've been thinking that when I finally get around to doing a city map I'll create the house shapes in Inkscape, but if you've found an easy way to do this in GIMP I'd be curious to know how you did it. Also, I just checked your OP profile but didn't see any info on your new campaign setting. Are you planning on hosting it at the Portal?

Cheers,
-Arsheesh