Koblenz, Germany

Wine, more specifically Riesling, reigns here—and you’ll find plenty of atmospheric weinstube, the grape-lover’s version of a beer garden—but beer aficionados won’t be disappointed by a fall river cruise to this 2,000-year-old city where the Rhine meets the Moselle. It’s all part of culinary traditions dating back centuries. A local specialty called doppekooche—a potato, bacon and onion casserole—pairs well with drier Rieslings and can be enjoyed amid medieval churches and squares. We say prost to that!