As Soviet forces advanced in Eastern Europe in 1944, Nazi troops began deliberately sinking their ships in the Danube River .

River cruises are “more about the experience off the ship than on,” a travel journalist says. Viking and American Cruise ...

The Danube in Depth cruise embarks in Nuremberg and disembarks in Budapest with stops in Regensburg, Passau, Linz, Durnstein, ...

Many also suggest signing up for an evening sightseeing cruise through local operators like Legenda Sightseeing Boats and Portum Lines. The Danube River is free to visit 24 hours a day.

While Celebrity River Cruises has yet to release detailed itinerary information, a handout image from the brand depicts a ship on the Danube River ... to a whole new level of sophistication ...