The Burgtheater (literally:"Castle Theater" but alternatively translated as "(Imperial) Court Theater"), originally known as K.K. Theater an der Burg, then until 1918 as the K.K. Hofburgtheater, is the national theater of Austria in Vienna. It is the most important German-language theater and one of the most important theatres in the world. The Burgtheater was opened in 1741 and has become known as "die Burg" by the Viennese population; its theater company has created a traditional style and speech typical of Burgtheater performances. History The original Burgtheater was set up in a tennis court (called a 'ball house' at the time) that the Roman-German king and later emperor Ferdinand I had built in 1540 in the lower pleasure garden of the Hofburg after the old ball house fell victim to a fire in 1525.The theater opened on 14 March 1741, the creation of the Habsburg Empress Maria Theresa of Austria, who wanted a theater next to her palace. Her son, Emperor Joseph II, called it the "German National Theater" in 1776. Three Mozart operas premiered there: Die Entführung...