The municipal theater in Duisburg, a city in Germany’s industrial Ruhr Valley, saw 80,000 liters of water pour over the stage, the floors, and crucial building infrastructure following a mishap during sprinkler system testing. (No answer yet as to whether the cause was mechanical or human.) The venue is home to the Deutsche Oper am Rhein, the Ballett am Rhein, the Schauspiel (spoken theater) and the Duisburg Philharmonic Orchestra. (in German; for Google Translate version, click here) – WDR (Cologne)