Bagnone Area was inhabited since prehistory, although we hear about it only after VI-VII century a.C., when trade develops in the area and in the Appenninic region. The first masters of Bagnone were the Malaspina family, who ruled over the village with ferocity. After them, the Visconti masters of Milan held the power for a short period, until the Florentines took over the town, interested in a passage towards north across the Apennines.

Starting from XV century, under the rule of the Florentines, Bagnone experienced three centuries of peace. Intense trade with the north and the south brought prosperity to the town, which knew a period of urban expansion and architectonic innovation; among the new buildings, noticeable are the arcades along what is now called "via della Repubblica". Because this prosperity lasted such a long time, Bagnone was enriched by a number of monuments from different times; it thus became a gallery of different styles and one of the most interesting spots in the Valle.