City of Dredd

For those interested in Mega City or planning on running a game in that setting, there's a great resource that documents locations mentioned in the Dredd comic, with a wealth of information.
It's available from www.lulu.com for a small fee. Well worth it.

Another superb resource, and a good read, is the Worlds of Dredd. Again, this is available from Lulu, and describes locations outside of Mega-City, both on Earth and beyond!