 Since 7 July 2008 it has been part of the UNESCO World Heritage Sites "Fortifications of Vauban" which includes eleven other fortifications.Within the citadel on the side of "La Place de Manœuvre" a small Baroque-style chapel was built.Outside, "Le Mur des Fusillés" (the wall of the people executed by a firing squad) pays tribute to the 218 members of the French Resistance shot in the citadel's ditch during World War II.