Burgtheater is the premier theater in Austria, especially for spoken drama (vs opera or musicals) 

I snapped this pic on a recent summer visit. The Burgtheater was first called K.K. Theater an der Burg, then until 1918 as the K.K. Hofburgtheater. It is the Austrian National Theatre in Vienna and one of the most important German language theatres.

Universitätsring 2, 1010 Wien, Austria
Phone: +43 1 514444140
Architect: Baron Karl von Hasenauer