did some more digging (especially about urban exploration in the USA, even though one could imagine the European pictures to be taken anywhere) there's tons of pictures that show very nicely what happens to places abandoned and nature slowly reclaims the place.
so here's 2 sites I foundhttp://www.anshitsu.eu/gallery/
first one is a very nice gallery partly showing pictures of abandoned places in the us. I think the jail is very fascinating, since it also kinda fits into the wasteland story.
theres also a gallery of a jet engine testing facility (how awesome is that ?)http://www.fallout-ue.com/locations/
this one only shows lost places in the US (I think) also very interesting finds here.
theres an extensive list of links about urban exploration, where you can find more like thishttp://www.flickr.com/photos/urbanizedus/
(mainly exploring in the USA)
those people are crazy and sometimes even go to jail for trespassing on private property in order to get these pictures.
(this site tells a story about someone who went to jail for urban exploration in the usa, its in german though http://der-schwarze-planet.de/42-stunde ... r-gittern/