The Christmas Market in Vienna has already opened and we were there this weekend. It was packed with people and everyone enjoyed the glühwein and all the small shops located outside the “Rathaus” in Vienna. I am said to say so, but the Christmas Market in Vienna looks quite a lot better than the one in Budapest, but that probably has to do with the fact that the square in front of the Rathaus (City Hall) is better for such a market than Vörösmarty Square in Budapest. Some more markets will open in Vienna by Schönbrunn and Belvedere in a couple of days.
If you come to Budapest, you should for sure consider a day trip to the Christmas Market in Vienna.
Christmas Market Vienna slideshow