If your trip to Saint-Marcel-sur-Aude is all sorted out but your itinerary is a little on the empty side, let us give you a few hints and tips.Narbonne Cathedral is a must-see attraction in this impressive city. Swing by and see for yourself what all the fuss is about.Keep yourself entertained by stopping by Château de Paraza and L'Oulibo Olive Cooperative. One more sight to look into is Domaine de l'Herbe Sainte.