Koblenz, Germany, is located at the confluence of the Rhine and Moselle rivers, at one end of the UNESCO World Heritage Upper Middle Rhine Valley -- a scenic stretch of river known for its castles and vineyards. The city dates back to Roman times, has been under French and German rule, and has a delightful Old Town to explore.
Around every corner is a bit of whimsy: the face under the clock on the Mittelrhein Museum building that sticks out its tongue on the hour; the boy in the Schangel Fountain who spits water across the courtyard at random; and the myriad statues that dot the squares and street corners. Climb the steps up to the statue of Emperor Wilhelm I at the Deutsches Eck, ride a cable car across the river to the Ehrenbreitstein Fortress, or sample local vintages at the Wine Village, built for the 1925 German Wines exhibition. Some river cruise lines also offer tours from Koblenz to the medieval town of Cochem.