Begin your day with a morning tour of Cologne, Germany’s fourth largest city. Stroll through Old Town past St. Martin’s Church and see the Dom, Germany’s largest cathedral and a UNESCO World Heritage Site. Spend your free time enjoying Cologne’s atmospheric waterfront, or perhaps join an optional excursion on which you ascend to the Dom’s roof for up-close views of the cathedral’s architecture and bird’s-eye vistas of Cologne. Afterward, return on board for dinner. Alternately, you may set off on an optional excursion to explore Cologne’s spirited beer culture, sampling Kölsch, a light, crisp beer brewed only in Cologne, and enjoying a brauhaus dinner. After, return to your ship for a late-evening departure.