Former mill (seigneurial or banal mill) of the castle of the Barons of Andlau: this building bears witness to the main activity of the town for centuries, until the appearance of the textile industry in the 19th century. A renovation was undertaken in 1752, in place of an older building, as the presence of a mill is attested since the end of the 14th century. This mill ceased to operate around 1920.