This is actually something completely new to me, I've never even heard the word before, but to a map nerd like me it's GOLDEN!
A big thank you to Hounaine El-Hamiani who contacted me via cartographersguild.com to request some city maps. It was a very flattering request (via a misunderstanding) which I had to unfortunately decline. I suggested that there are much more talented artists to be found by posting through the guild.
Hounaine was gracious enough to share the following links, which I have now saved to my favs.
This is some ridiculously good stuff. I had no idea there were folks out there putting Google Maps to shame with fictional urban settings. The level of detail is amazing.