Courtesy Viking Cruises
A Viking ship cruises on the Rhine past Katz Castle, which sits above the German town of St. Goarshausen in Rhineland-Palatinate. It was first built around 1371 by Count William II of Katzenelnbogen. Engineered to get you closer to your destination, Viking's ships provide spacious staterooms with full-size verandas, the largest suites on Europe's rivers, and of all cruises, the most al fresco dining.