Line: Crystal River Cruises
Known for its luxury ocean ships, Crystal Cruises launched Crystal River Cruises in 2016 with its first ship, Crystal Mozart. Aside from being the largest river ship to cruise through Europe, the 154-passenger ship has luxe touches you won’t find on many river ships, including skylights, a pop-up bar, a spa with separate men's and women's saunas, and bathrooms with TV screens in the mirrors.
Itinerary: Crystal Mozart's extra width limits it to sailing the Danube River, but the itinerary is a memorable one. You'll sail on a 10-day round trip from Vienna and cruise through scenic Wachau Valley with calls on Dürnstein, Melk, Passau, Bratislava, and Budapest.