Silver Oak.

Silver Oak remains a bastion of California Cabernet, though its Oakville home is as much a feat of modern engineering as it is a winery. Built with reclaimed limestone from a 19th-century flour mill, the LEED Platinum-certified facility runs on a massive solar array that generates more power than the estate actually consumes. Inside, the aesthetic is clean and glass-heavy, designed to pull the surrounding vineyard views into the tasting room. The winemaking here follows a singular, disciplined philosophy: 100% Cabernet Sauvignon aged exclusively in American oak for a plush, approachable profile. Visitors can explore the history gallery or the glasshouse library of past vintages, but the real draw is the transparent look at sustainable viticulture, from the owl nesting boxes in the vines to the energy-efficient cellars that house their famous velvet-textured reds.