From the mid-19th century on, the entire Val de Fensch area began building special housing for the huge numbers of workers and foremen who were flocking to the region in Lorraine's own version of a gold rush triggered by the booming mining and steel industries. The terraced cottages, known as corons, are living reminders of the region's social structure, which for a long time was characterised by the paternalistic approaches taken by the mining industrialists.