Château de Salm is a ruined castle overlooking the valley of the Bruche, located in the commune of La Broque in the present-day département of Bas-Rhin, Alsace, France. Construction began in 1205 and was completed around 1400.
It has been listed since 6 December 1898 as a monument historique by the French Ministry of Culture.
The Château de Salm was built between 1205 and 1225 by Henry III, Count of Salm (of Haute Lorraine), on the territory of the Senones Abbey of which he was the lawyer. The Salm dynasty originated in the 13th century with the Counts of Bar (Bar-le-Duc), one of the more powerful families of Lorraine. The Salm-Lorraine dynasty came from the Luxembourg family.
Henry IV, grandson of the builder, reorganized the saltpans of Morhange as well as the Framont forges which were situated close by. Industrial politics provoked a military reaction around 1259 from the Bishop of Metz, who occupied the installations and forced the count to sell him the castle at Salm and the Château de Pierre-Percée and to swear fealty to him. When the bishop left the castles, the count retook the fortresses.
In 1285, the trouvère from Lorraine, Jacques Bretel, spent several days at the castle where he met Count Henry IV. He recounted his stay in his work le Tournoi de Chauvency.
The area was the site of an important occupation throughout the 14th and 15th centuries (with foundry, metallurgy and pottery activities), without a doubt the after-effects of the acquisition by Jean de Salm of the lower valley of Bruche in 1366, from Mutzig to Schirmeck. The large works completed around 1400 considerably altered the castle's defences with the construction of a thick shielding tower, a barbican and a new gate. The old shield wall was torn down and adapted for new functional requirements.