Overview: From a fairy tale fortress to the gentle Pyrenees, Rudy takes in the castles and peaks of this magical region. We tour the largest fortress in Europe, Carcassonne, and sample the local stew, Cassoulet. Your itinerary includes an unforgettable stop at Carcassonne, the largest fortress in Europe, replete with romantic castle ruins. In the high country, explore one of the world's natural wonders, a mountain amphitheater with cascading waterfalls.