Renzo Marinai is a historic organic winery in Panzano, Chianti, known for Sangiovese-based wines, its picturesque San Martino a Cecione estate with ancient cellars, and a focus on biodynamic practices, offering tastings and farm stays with local food and natural beauty. The estate blends tradition with modern organic methods, producing structured wines from grapes like Sangiovese, Cabernet Sauvignon, and native varieties, emphasizing terroir and a connection to nature.