Lens is a town in northern France located in the Pas-de-Calais department. It is known for its coal mining history and its Gothic Revival architecture. Riom is a commune in the Puy-de-Dôme department in Auvergne-Rhône-Alpes region of central France. It is known for its historical monuments, including the Cathedral of Notre-Dame de l'Assomption and the Château de Riom. CLUNY is a commune in the Saône-et-Loire department in the Bourgogne-Franche-Comte region of eastern France. It is known for its Benedictine abbey, the Abbey of CLUNY, which was once the largest church in the world. Nesle is a commune in the Somme department in Hauts-de-France region of northern France. It is known for its 12th century castle and its 18th century church. Niort is a commune in the Deux-Sèvres department in Nouvelle-Aquitaine region of western France. It is known for its medieval architecture, including the Gothic-style Church of Saint-Hilaire and the Renaissance-style Château de Niort.