The Gaja Winery was founded by Giovanni Gaja in 1859 and has been owned and operated by five generations of the Gaja family.
Giovanni Gaja was the great-grandfather of Angelo Gaja, the Winery's current owner. In 1994, GAJA acquired its first wine estate in Tuscany, Pieve Santa Restituta in Montalcino. This estate produces three Brunello di Montalcino wines- including the single vineyard Sugarille- from vineyard holdings totaling sixty five acres. In 1996 Gaja acquired a second property in Tuscany, Ca'Marcanda, located in Castagneto Carducci in Bolgheri. Of the property's 200 acres, 150 have been planted with new vineyards: primarily Cabernet Sauvignon and Merlot, as well as Cabernet Franc and Syrah.
Currently, the Gaja Winery owns 250 acres of vineyards in Piedmont, located in the Barbaresco district (Barbaresco and Treiso) and the Barolo district (Serralunga d'Alba and La Morra).