The Badia a Passignano abbey is situated in Sambuca Val di Pesa, three kilometers to the south of the Tenuta Tignanello estate; its 223 hectares extend over a calcareous terrain which rises to an altitude of 250-300 meters (825-100 feet) above sea level in one of the loveliest and most productive parts of the Chianti Classico appellation.  The fundamental importance of this abbey in the history of Chianti Classico can be read in many volumes housed in the State Archives of Florence, which confirm the presence of Sangiovese vineyards and other types of cultivation in the zone. Further confirmation occurred in 1983 when, in the terrain surrounding the abbey, a millennia-old vitis vinifera vine was found.