This small square is presumed to owe its name to an old French measurement for salt. It only began taking shape in the last quarter of the 18th century after some houses burned down that were not rebuilt and which overlooked the old Cour aux Ânes.
At No. 1, on the corner of Rue Saint-Sauveur (No. 2), you can see an old 18th-century house, at No. 3 you can see a portal from the same period, and at No. 5 is the Hôtel de la Caisse d’Epargne (savings bank building) built in 1902 based on plans by Auguste Bénard, who was the town architect.
The flower market was once held in this square.
The Poterne de Brevet postern-gate once marked the end of the town’s main street, which was expanded from 1714 to 1719 as part of the second expansion project, which brought it up to the current Porte de Dinan.
The house forming the corner of this square along with No. 2 Rue Saint-Sauveur, avoided destruction in 1944 and dates back to the 18th century.