Gloria Ferrer Caves & Vineyards The courtyards and red-tile roofs hint at the winery’s Spanish owner (Freixenet, the world’s largest producer of sparkling
wine). Tour and tasting from $10; in Sonoma; gloriaferrer.com or 707/996-7256.
Iron Horse Vineyards Wine country at its elegant-rustic best. Free tour (by appointment only), tasting from $10; near Sebastopol; ironhorsevineyards.com or 707/887-1507.
Korbel Champagne Cellars The oldest continuously producing sparkling-wine house in California, founded in 1882 by three brothers from Bohemia. Free tour and tasting; in Guerneville; korbel.com or 800/656-7235.