The origin of the Ciacci Piccolomini d'Aragona estate dates back to the 17th century and the estate is located on the south-east slope of the municipality of Montalcino, where the Bianchini family have made a name for themselves by producing elegant, age-worthy Brunellos from their “very special microclimate, a rather cool location with south-facing vines and well-draining galestro soils” (Monica Larner, Wine Advocate) on the Castelnuovo dell'Abate hill.
 
The estate’s jewel in the crown is their famed “Pianrosso” vineyard, the oldest and most representative of their vineyards, which covers 11,69 hectares (29,22 acres). The soil is medium grain with good levels of marl, dating from the Eocene period and the altitude of this large vineyard varies from 240 to 360 metres above sea level. The grapes from this incredible terroir make both the Pianrosso cuvée and Pianrosso Santa Caterina d'Oro Riserva (the latter only in exceptional vintages).

“Brother-and-sister team Paolo and Lucia Bianchini continue to make excellent Brunellos in the tradition of their father, Giuseppe, who died in 2004. They are better employing their new modern cellars, which were completed last year, and continue to maintain their south-facing vineyards at near pristine levels. The Brunellos emphasize finesse and balance, with layers of ultrafine tannins and subtle ripe fruit, yet they age incredibly well. The Bianchini family was gifted its Brunello estate in 1985 by Countess Elda Ciacci Piccolomini d’Aragona, who had no heirs; Giuseppe had been the estate manager.” — Wine Spectator, July 31, 2007

Austrian online wine review site Falstaff scored the 2019 a perfect 100 points in 2025.