Wineries: Geyserpeak Pedroncelli Trentadue Canyon Road Frick Lake Sonoma and more Tasting Room downtown for Meeker Vineryards.
Places to eat: Santi (In downtown Geyserville. I cannot recommend this place enough. Stop in for a drink at the bar and if you're lucky Sean the bartender will make you whatever specialty he is making that evening. Elegant yet hearty Italian food which focuses on flavor and fresh ingredients. Especially great on a Summer night when you can sit on their back patio.) There is a great brunch place just past town (next to the Geyserville Inn) in an old victorian home.