Durnstein, Austria

Sloping, vineyard-covered hills. A cerulean blue abbey church with gingerbread detailing. Cobblestone streets. This dreamy town along the Danube River is part of many river cruise itineraries. You can walk through the entire town in about an hour, but its sense of solitude and peace is lasting.  

Read more: 10 Things to Do On a Danube River Cruise for Less Than 10 Euros