Visit the German Black Forest region and the French town of Strasbourg in one day on this private day trip from Frankfurt. With a private guide at your side, you'll enjoy a walking tour around the spa town of Baden-Baden, stop for photos at mysterious Lake Mummelsee, and then make the most of an afternoon at your leisure in handsome Strasbourg — perhaps exploring UNESCO-listed La Petite France. This is a private tour, so make the most of having a flexible itinerary with personalized commentary throughout the day.