Tenuta Guado al Tasso is a Tuscan wine estate located on rolling hills near the coast in the Bolgheri amphitheater. It is a part of the Marchesi Antinori group, and is known for its wines made predominantly from Cabernet Sauvignon and Merlot, rather than the region's famous Sangiovese grape. There are 300 hectares (750 acres) planted with vines on the property. The proximity to the coast provides the vineyards with plentiful sea breezes which moderate the warm, sunny climate, while at the same time minimizing cloud cover. This means that the grapes can reach full ripeness while retaining acidity, which is essential to make a complex, balanced wine. There is a diverse range of soil types, and a correspondingly diverse range of grape varieties – along with Cabernet Sauvignon, Merlot, Cabernet Franc and Syrah, Guado al Tasso also makes a white wine based on Vermentino. The della Gherardesca family began wine production on the estate as early as the second half of the 17th Century. In the 1930s the property came under the control of the Antinori family through marriage