Saline Royale is a historic saltworks located in the town of Arc-et-Senans, France. Established in the 18th century, it was designed by the architect Claude-Nicolas Ledoux and served as a facility for the production of salt, which was a vital resource at the time. The site is notable for its unique architectural style and layout, reflecting the principles of the Enlightenment. Today, Saline Royale is recognized as a UNESCO World Heritage site, attracting visitors interested in history, architecture, and industrial heritage. The site features a museum and hosts various cultural events, showcasing its significance in the history of salt production in France.