Travelers are voting Chateau d If as the best fort in Marseille. There are 2 forts in Gap a city just 182 km from Marseille and 2 forts in Perpignan which is 325 km distant. The most popular of these are Fort Du Randouillet in Gap and Fort de Bellegarde in Perpignan. You can find 18 Fort in the country of France and Chateau de Montsegur is our members favorite Fort in all of France. Want more? Check out our map of forts in Marseille.