Sail the Danube eastbound from Prague to Vienna, exploring Christmas markets and historic stops in Nuremberg, Regensburg, Passau and Melk on a festive river cruise. Begin with two nights in Prague at either the Art Deco Imperial Hotel, Prague Marriott, or Cosmopolitan Hotel Prague. Conclude in Vienna with hotel stays at Hilton Vienna Plaza or Hilton Vienna Am Stadtpark, and spend your cruise nights aboard an Avalon Suite Ship between Nuremberg and Vienna.