Winery Winery Introduction: Grgich Hills Estate Grgich Hills Winery is a world-renowned Napa Valley winery with a long history of producing award-winning wines. Established in 1977, the winery is the brainchild of legendary winemaker, Mike Grgich, ... Award-Winning California Wine Grgich Hills Winery Napa Valley Wines Organic Vineyards Sustainable Winemaking Jun 20, 2023