Hello, we give you here some informations (which will depend on your availibilities, time and season (weather) On your way down to the french Pyrenees, you should see FOURCES (Gers), SAINT-BERTRAND de Comminges (Haute-Garonne), MIREPOIS (Ariège), and, of course CARCASSONNE (AUDE). In Aude also, a lot of old extraordinary castles (châteaux Cathares) and the impressive gorges of Galamus. Not far from ARREAU, we have the Néouvielle Réserve, on the right on the road towards Spain. Magnificent natural site, but not accessible during winter (because of the snow, take advices from tourism agencies). On the spanish side of Pyrenées, through ARREAU, and the ARAGNOUET- BIELSA tunnel, for example, you could enjoy the old city of AINSA, and wild mountain landscapes around. Farther west, alwails in Spain, you have to see the surprising "Arizona-like" red cliffes of RIGLOS... , with near the magnificent castle of LOARRE. And farther, farther west the "hoz de ARBAYUN" (ARBAYUN big gorges) With the hope that this answer will not be too late, have a good trip !