The Royal Saltworks of Arc-et-Senans is listed as a world heritage site by UNESCO. Built by Claude Nicolas Ledoux, a very renowned architect of the Age of Enlightenment, this factory was responsible for the production of salt during the reign of Louis XV. The enclosure now covers five hectares and can be visited.
Les Salines d'Arc-et-Senans is a historic saltworks complex located in eastern France. It is known for its impressive architecture and its importance in salt production during the 18th and 19th centuries.