Aerial footage, informative narration, and a soundtrack that includes the works of native sons Ludwig van Beethoven and Richard Wagner combine for an enchanting journey along the path of the Rhine River through Germany's southwestern region. Sights along the way from Lake Constance to Cologne include the Grimm Brothers' Black Forest, cosmopolitan Frankfurt, the rich wine region, historic Bonn, the romantic string of castles like beads on a necklace at Koblenz, and Heidelberg.