Wineries

Castello Banfi – Brunello di Montalcino from One of Tuscany's Largest Estates

Robert KozinskiBy Robert Kozinski
August 5, 2026
castello banfimontalcinosangiovese

Castello Banfi in Montalcino: Brunello di Montalcino, Sangiovese clone research and Horizon tanks. History, style, fact sheet and famous wines in profile.

The Essentials

  • 1Built up in Montalcino in the late 1970s by the Italian-American brothers John and Harry Mariani – still family-owned today.
  • 2Around 2,900 hectares of land in the south of Montalcino, of which roughly 850 hectares are under vine – one of the largest contiguous estates in Tuscany.
  • 3The headquarters is the medieval Castello di Poggio alle Mura, which the family restored from the 1980s onwards.
  • 4Decades of research into Sangiovese clonal selection – several of the officially registered Sangiovese clones come from Banfi.
  • 5The patented Horizon fermentation vessels combine stainless steel and wood and are used for Brunello and the Sangiovese-based blends.

Key Facts

Region
Montalcino (province of Siena), Tuscany, Italy
Founded
1978, first land purchases by the Mariani brothers; Castello di Poggio alle Mura part of the estate from 1983
Owner / Winemaker
The Mariani family, today led by Cristina Mariani-May; a cellar tradition going back to Ezio Rivella
Vineyard area
around 850 hectares of vines within roughly 2,900 hectares of land
Main grape varieties
Sangiovese (the Brunello clone), Cabernet Sauvignon, Merlot, Syrah, Chardonnay
Wine styles
Classic Brunello and Riserva, Rosso di Montalcino, international blends, white wines
Classification
Brunello di Montalcino DOCG, Rosso di Montalcino DOC, Sant'Antimo DOC, Toscana IGT
Signature
Sangiovese clonal research and the patented Horizon hybrid tanks of stainless steel and wood

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Summary

Castello Banfi is one of the largest and most influential wine estates in Tuscany – and at the same time one of the most unusual success stories of modern Italian wine. In the late 1970s the Italian-American brothers John and Harry Mariani bought land in the thinly populated south of Montalcino and within a few years built up an estate of around 2,900 hectares, of which roughly 850 hectares are planted to vines today. At its heart is Brunello di Montalcino from Sangiovese, complemented by Rosso di Montalcino and international varieties under the Sant'Antimo DOC. Banfi became known far beyond the region through systematic research: soil zoning, Sangiovese clonal selection and the self-developed Horizon fermentation vessels made of steel and wood.

History

The roots of the estate lie not in Tuscany but in New York. There the Mariani family ran a large wine import business that enjoyed enormous success in the United States with Italian Lambrusco during the 1970s. With that capital behind them, John and Harry Mariani looked for an estate of their own in Italy – and in 1978 settled on Montalcino, at the time still a quiet, economically weak corner of Tuscany with only a handful of Brunello producers.

Over several years the brothers assembled parcel after parcel until the estate reached its present size in the early 1980s. In 1983 the Castello di Poggio alle Mura was added, a medieval castle badly damaged in the Second World War that was then restored over many years at great expense. The name Banfi goes back to an aunt of the family.

Decisive for the technical direction was the oenologist Ezio Rivella, who accompanied the project from the very beginning and turned the new build into one of Italy's most modern wineries. Today the company is led by Cristina Mariani-May; the estate remains entirely family-owned.

Location & Terroir

Castello Banfi lies in the south of the municipality of Montalcino, towards the Ombrone valley and the Maremma. This part of the appellation is warmer, drier and more Mediterranean in character than the cooler north-facing slopes around the town of Montalcino itself. The proximity of the Tyrrhenian Sea provides good ventilation and stable ripening conditions, while Monte Amiata to the south shields the vineyards from storms.

Remarkable is the heterogeneity of the terrain: the vineyards are spread across different altitudes, exposures and soil types – from calcareous marl and clay loam to stony, skeletal parcels. It was precisely this diversity that formed the starting point for the zoning the estate carried out with universities from the early 1980s onwards: every parcel was mapped and planted with the plant material best suited to it. Alongside vines, extensive olive groves, wheat fields, plum orchards, woodland and scrub shape the vast property.

Style & Philosophy

Castello Banfi's stylistic ambition sits between tradition and technology. The Brunello is clearly Sangiovese-driven, with ripe cherry fruit, fine herbal spice and approachable, polished tannins – more fruit-forward and rounded than stern and austere. This is made possible by a cellar that was long considered one of Europe's most modern, combined with a consistently scientific approach in the vineyard.

Two projects stand as symbols of that. First, the clonal selection of Sangiovese: from the 1980s onwards, Banfi worked with university partners for years to examine several hundred Sangiovese clones in order to identify those best suited to Montalcino's soils, altitudes and exposures. Several of the officially registered Sangiovese clones go back to this work. Second, the Horizon fermentation vessels, developed together with a cooperage: hybrid tanks whose lower section is stainless steel and whose upper section is lightly toasted wood. They combine the precision and temperature control of steel with the gentle oxygen ingress of wood, and are used above all for Brunello and the Sangiovese-based blends.

Banfi was also an early mover on sustainability and social standards: the estate obtained certification to environmental and social standards, among others, and today holds the Italian Equalitas sustainability certification.

Notable Sites & Wines

The range is broad and clearly tiered:

  • Brunello di Montalcino DOCG – the house classic, from the estate's own Sangiovese selection
  • Poggio alle Mura – Brunello from the vineyards around the castle, a direct result of the clonal research
  • Poggio all'Oro Riserva – the estate's top Riserva, made only in suitable vintages
  • Rosso di Montalcino DOC – the younger, more approachable Sangiovese
  • Sant'Antimo DOC: the blends Summus (Sangiovese, Cabernet Sauvignon, Syrah), Excelsus (Cabernet Sauvignon and Merlot) and Cum Laude, plus the varietal wines Tavernelle (Cabernet Sauvignon), Mandrielle (Merlot) and Fontanelle (Chardonnay)

Awards

For decades Castello Banfi has been among the most internationally visible producers in Montalcino and has received numerous distinctions, including the international prize at Vinitaly. The Brunello Riserva Poggio all'Oro regularly earns top scores in the leading wine guides and trade press. Beyond pure tasting scores, the estate is regarded as a forerunner in certification for the environment, workplace safety and social responsibility. Its greatest achievement, though, is probably that it put Montalcino on the international map early and with substantial investment – and that its research created knowledge from which the entire appellation benefits.

Frequently asked questions

What is Castello Banfi known for?

Castello Banfi stands above all for Brunello di Montalcino – first and foremost the Poggio all'Oro Riserva and the single-vineyard Poggio alle Mura. The estate is also known for its pioneering work in zoning Montalcino, for its Sangiovese clonal selection and for the hybrid steel-and-wood tanks it developed itself.

Where is Castello Banfi located?

The estate lies in the south of the municipality of Montalcino in the province of Siena, Tuscany. Its centre is the Castello di Poggio alle Mura, a medieval castle that today houses cellars, restaurants, a museum and a hotel.

Which wines does Castello Banfi produce?

Alongside Brunello di Montalcino DOCG and Rosso di Montalcino DOC, the estate makes international blends and varietal wines under the Sant'Antimo DOC – among them Summus, Excelsus, Cum Laude, the Cabernet Sauvignon Tavernelle, the Merlot Mandrielle and the Chardonnay Fontanelle.

Can you visit Castello Banfi?

Yes. The castle is a wine-tourism destination with tastings, cellar tours, restaurants and accommodation. That makes Castello Banfi one of the best-known stops for wine travellers in Montalcino.

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