I'm going to Vienna sometime between October and March next year for a wedding. 10 days. Where else can I visit while in the general area? Short flights or train rides are ok as long as they don't take more than 4-5hrs. I've been to Europe, but only far western (Spain, France, England). Within or outside of Austria. We like nature and culture.
We had a plan for Budapest / Vienna / Bratislava which turned into just Budapest and Bratislava when we decided to just go for a week. I'd stick with trains, it will be easier and quicker and there's so much to see in the area!