After a morning cruising south on the Rhine, you’ll spend an afternoon and evening exploring lively Mainz, before calling at historic Speyer, Germany’s oldest planned medieval town, the following day. Continuing your journey south, you’ll stop at Alsace capital Strasbourg, home to Europe’s oldest Christmas market. Make a final stop at picturesque Koblenz, which sits on the confluence of the Moselle and Rhine, as you head back to Cologne.