Smithsonian Journeys and AmaWaterways announced 42 new river cruises for 2027, including European and Southeast Asian itineraries, with enriching excursions and experts onboard.

From exploring Germany’s medieval castles to sampling Portugal’s finest Port wines, here are 10 of the best river cruises in Europe, according to experts.

Europe’s great rivers have long been the lifeblood of its civilization—meandering through storybook towns, Renaissance cities ...