I've just spent a couple weeks travelling round Georgia and Armenia. Tbilisi (Georgian capital) in particular is urban decay heaven.
A lot of dilapidated apartment blocks are being renovated. Some just look like this anyway, regardless of whether there's any building work going on or not - it's sometimes hard to tell.
It's difficult to work out how some of these buildings are still standing.
I took several thousand photos (approximately) of doors, some of which are likely to appear here over the next couple of weeks.