Small towns hug the Danube - one of the world's most picturesque rivers - on its journey through Austria, Germany, and Slovakia to the Black Sea. Anchored by medieval fortresses, Leslie lets down her hair indulging in local delicacies in one village's castle tower. The steep river hillsides are laden with vineyards and apricot orchards producing world-class libations. Leslie explores this rich agricultural area, tasting and making the ancient and famed Linzertorte along the way.