This isn't an abandoned concentration camp redecorated by sprayers but the gasworks of Leopoldau in Viennas district of Floridsdorf (redecorated by sprayers):
Actualy the first picture of Floridsdorf I am posting here. Well, much more won't follow, ever, it is not a district I am especially attracted to. But I very much like this building; when I discovered it, about a year ago, I was equally fascinated, and as I happened to pass by once more (which wasn't quite planned) I just had to take some photos again.
