Experience some of the top wineries in sonoma county and napa valley on this private full day guided tour youll be chauffeured from san francisco across the iconic golden gate bridge and through the wine countrys rolling vineyard strewn hills sip wines at informative tastings and learn about different winemaking techniques the local vintners use to craft the taste of their wines relax in the scenic and laid back town of yountville for lunch own expense and peruse the local art galleries