Looking for the worst in a city is an interesting option, that is fair. But comparing the slums of various cities in Eastern Europe is almost useless, they are

Looking for the worst in a city is an interesting option, that is fair. But comparing the slums of various cities in Eastern Europe is almost useless, they are very similar. Yes, they are different than the slums of Rio de Janeiro or New Delhi or Cairo, but I don't see it as value added information. I remember well the Bucharest when all these ugly blocks of flats were almost new, clean and less ugly; it is not nostalgia, but in most places Bucharest was looking a lot better 30-40 years ago than it does today: the wealthy places are rare and very not original, the average new housing areas are beyond chaotic and the lower end places are actually new, they practically did not exist at that time (not in the current form or shape).