At south of Montalcino, the castle of Argiano dominates from the high of a hill the valleys of the lower Val of Orcia and Val d'Ombrone, with the slopes of the Mount Amiata set as picturesque scenery on the horizon. Not far away, rises the powerful castle of Poggio alle Mura. Unfortunately the fortification, known also as 'Argianaccio', is in a state of collapse, placed at the center of the exterminated vineyards property of the Banfi S.p.A. that here produce its famous Brunello di Montalcino.
We have information about this castle from 1208 documents, although on the hill of Argiano the first takeovers date back to the Roman age. It was always an important military outpost to guard the southern borders and in the course of centuries it had various owners and variously used until in 1438 it came under the authority of the Siena Republic.