I don't know if you guys are interested in things like this, but I have been looking around for level reference when I stumbled across this.
http://englishrussia.com/?p=293
This is a set of pictures taken in the city of Chernobyl after the obvious radiation problems. Apprently they do guided tours which is news to me. I'm not to big on radiation, however I must admit as an Urban Photography I'd love to go here and take some pictures.