This is a typical example of a residential block from our socialist heritage. In the last years becomes very fashionable to make additional heat insulation and balcony glazing. This blocks are very big, the apartments are private ownership, and it is impossible to organize all owners for a whole rehabilitation. And the result of this individual activity in the frame of one "community" is very funny.
Actually now are some EU-financed rehabilitation programmes for this prefabricated residential complexes and hopefully this funny slice-outlook will be changed soon.