Declared a national monument in 1989 the old tanneries bosane were located on the left bank of the river Temo. Built in the first half of the Nineteenth Century far from the inhabited center for track of unpleasant odours produced during the early stages of processing, but close enough to the river for the water supply. Near the Old Bridge, “Sas Conzas” (tanneries), constitute an important example of industrial architecture in Sardinia. The buildings, articulated on two floors, are distinguished for their arrangement in the array, both for the simplicity of the exterior architecture characterised by traditional facade decorated with red trachyte. On the ground floor were, in addition to a drain and to the presses the large masonry tanks covered in wood in which were immersed skins. On the upper floor, connected to the lower one by a wooden staircase, were placed in a small office, in which cared for the administration of the activities, and the machines for finishing. The tanning tradition at Bosa dates back at least to the times of the Romans, if not even more ancient, and would be prolonged until the middle of the twentieth century when the last tannery definitively closed its doors. The production was in the vanguard and much appreciated in the peninsula and abroad and specialized soon in the production of “cowhide”, used also in the field of the bookbinder. Within the complex of tanneries, from March 2011 is open the new Civic Museum dedicated to the tanning activity that committed laborers bosani starting from the end of the eighteenth century until 1962, year in which closed the last laboratory.
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