It's the East Pyongyang Grand Theater in North Korea
Like the others I was drawing a complete blank so I used a different approach. As the building was not coming up in any of the searches, I reasoned that it was probably in a place that is off the usual tourist trails. I was thinking maybe somewhere in the former communist dictatorships of eastern Europe. I did Google image searches for "national theater" and "concert hall" in combination with communist or dictatorship. Using "concert hall communist" led to this article with a similar looking building but without the dome -
http://leonidpetrov.wordpress.com/20...n-north-korea/
I then searched for "Pyongyang concert hall" and found it -
http://www.fotopedia.com/wiki/East_Pyongyang_Grand_Theatre#!/items/f92u9unugujk0-RxcW5mnKswM
It was not in the part of the world I thought it may be, but sometimes you get lucky
