The legendary "Father Rhine," as Germans call their country's longest river, flows past terraced vineyards, romantic castles, and ancient cities. A classic eight-day Rhine cruise takes you from Basel, Switzerland through Alsace, France and into Germany before traversing the Netherlands up to Amsterdam. Itinerary variations include combinations with other rivers such as the Main and the Danube.
The cruise season runs from March through December. There's a risk of high water in springtime and low water in the fall, though river levels can vary year to year.