The Bielefeld Opera is the venue of Städtische Bühnen Bielefeld (Municipal Theatre Bielefeld) in Bielefeld, Germany. It is a Dreisparten Haus (three-department house), offering plays, music (opera, musical theatre), and ballet. The main performance venue is the Stadttheater am Niederwall (Municipal Theatre at the Lower Wall), built in 1904 and extensively renovated from 2004 to 2006. It is the largest theater in East Westphalia, offering 500 performances annually.