Vienna is a beautiful town - have you been?
I have been to Vienna, Austria a couple of times in my life. Once as a kid, which I barely remember and once a year or so back, which I definitely remember because I shot like crazy there! In my limited experience, it's a very beautiful town. I wandered around a LOT (even though I was only there about 18 hours or so) and took many shots. It's just what I do. :-)
My best results were on the morning of my departure. I got up early and wandered the streets during sunrise. Luckily, I was close in to all the key sites, so even though I didn't have enough time to shoot them all, at least I was able to get street scenes like this one with very little people in them. That's one of my favorite reasons for shooting sunrise in distant cities (or any city for that matter).
This is the Graben, which is one of the famous streets in the historic city center of Vienna. It's all pedestrian and full of shops and restaurants, so while not a totally authentic, cultural experience, it's still a beautiful walk, especially when you can get it mostly empty. I walked along here the night before to find dinner (and take a few shots, of course), and it was CROWDED.
Vienna is definitely a place to see, assuming you are nearby. I would love to get back someday. Fingers crossed on that one. :-)