Travelers are voting Fort Du Randouillet and Ouvrage Col de la Buffère as the best forts near Ecrins National Park. There are 1 fort in Marseille a city just 116 km from Ecrins National Park and 1 fort in Besancon which is 165 km distant. The most popular of these are Chateau d If in Marseille and Fortifications of Vauban in Besancon. You can find 2 forts in Provence-Alpes-Cote d'Azur and 18 forts in the country of France. Our members favorite in Provence-Alpes-Cote d'Azur is Ouvrage Col de la Buffère and Donjon de Houdan is the top pick in France. Want more? Check out our map of forts near Ecrins National Park.