If you like classical music or simply cool, innovative art events, you might be interested in a project that is live on arte TV right now. arte is a German-French-Swiss culture television channel. They are having a live broadcast from the main train station in Zurich where a performance Verdi's La Traviata is taking place. Yes, in the middle of the train station. With a full orchestra, and a normally running train traffic. It's amazing.
You can watch the video stream online for another three weeks. Go here for the performace itself and here for a stream of the performance from behind the scenes. You can read more about arte at http://www.arte.tv/. The site is available in German and French.