I'm very interested in the history of the Cathars in southern France, and am thinking of visiting the Languedoc and nearby areas next September.

So far, I've interested a friend who would indulge my interest but is far more keen to see some beautiful gardens around there. So could anyone advise us on getting information on how to do both. So far the places we're thinking of are: Carcassonne, Pau, Toulouse and Mirepoix.

Any information and/or advice would be seized on gratefully.