Boyana Studio is a Film Studio in the foothills of Sofia, Bulgaria. Construction on what was then known as 'Boyana' began in 1951 and the studio was completed in 1963. It was a state-owned enterprise, cranking out ideological propaganda films for Soviet audiences. Permanent sets of Ancient Rome and Early Century New York can be spanned in a block.
I was lucky enough to travel and work there on a shoot a few years back and loved the contrast between the Post Soviet Architecture and state of the Art technology which it housed.