As you may have guessed from the title, this thread isn't for actually going to see plays, reading or anything gay like that, but instead the architecture of the buildings. Some of them are really cool, see. Like this abandoned Russian one

http://planetoddity.com/spooky-abandoned-russian-theater/

Also love the Poelzig designed one in Berlin

http://www.essential-architecture.com/IMAGES2/expressionist(11).jpg

GROSSES SCHAUSPIELHAUS!

Never seen an abandoned library before

http://englishrussia.com/index.php/2008/04/03/an-abandoned-library/

Libraries that aren't falling apart are fine too

http://thepugetnews.com/2008/12/07/beautiful-libraries-baroque-library-hall-klementinum-prague-czech-republic/

Post some more.