Located 4km southeast of Montalcino on the Fattoria dei Barbi wine estate (one of the oldest in the region), this Brunello-focused museum has exhibits about the Montalcino region and its famous wine families that will be of particular interest to wine buffs. It's worth paying the €5 extra for a guided tour (Italian and English).
Museo della Comunità di Montalcino e del Brunello
Val d'Orcia