actually, the original block is in Budapest - Hungary, at the original place:http://hu.wikipedia.org/w/index.php?title=F%C3%A1jl:SOTE_Tower.JPG&filetimestamp=20080710182717cheers! :)
The film is based on the main building of one of the universities of Budapest (Semmelweis), not on "Pécsi magasház". The existing building is a twenty-something storey block, you can see the slightly different texture where the virtual addition begins, just above the lamppost in minute 3:05. Anyway, the idea and the work, specially the lighting is remarkable. Bravo solidfill.