Bratislava (Slovakia)
Different country in 1 hour. Castle, old town, cheap beer
Vienna sits at the crossroads of Central Europe — Bratislava, Salzburg, and the Wachau valley are all easy day trips.
Different country in 1 hour. Castle, old town, cheap beer
Danube wine country, vineyards, fairytale Dürnstein
Sound of Music tour + Mozart + the Alps. Long day but doable
Baroque Benedictine abbey overlooking the Danube — UNESCO masterpiece
Long day but doable — thermal baths, Buda Castle, Hungarian dinner before return