A fortress erected a century before the birth of Vauban, the Doullens Citadel was also used as a place of detention.
During the European Heritage Days, discover the uses made of the citadel during the 20th century. We propose: - Visits of the galleries of counter-mines - Visits "20th century" with access to the bunker used by the Germans during the Second World War and the solitary confinement of the prison for women. - Conferences: "The Citadel of Doullens during the two world conflicts", "From Buchenwald to Doullens", "The Harkis in the Citadel of Doullens"