Tonight the auditorium of the Vienna State Opera is turned into a large ballroom: it´s the night of the famous Vienna Opera Ball, the highlight of the Viennese carnival season and a top-calibre social event, attracting celebrities from around the globe. I discovered this photo in the window of a new photo gallery in the city center. It shows the opening polonaise danced by young ladies and men, experiencing their "introduction to Viennese society". Unfortunately the photographer wasn´t indicated. Click here for a video of last year´s opening.