The Citadel of Montpellier is an Early Modern fortification in the city of Montpellier, in the Hérault département of southern France. It was built between 1624 and 1627, after several rebellions under the orders of Louis XIII in order to keep watch over the town. In the 20th century it became the Joffre Barracks, named after Joseph Joffre, and since 1947 the citadel has been an academic campus - the nationwide famous Lycée Joffre.