Thanks to the bountiful woods, that provided fuel and abundance of water that generated motive power, in Bienno arised a thriving economic industry connected with the production and sale of iron goods.
As early as the year 1000 the “Vaso Re” was built, an artificial canal that that brought water for providing energy to the waterwheels that moved both the heavy hammers used for forging iron as well as flour mills and sawmills.