Hours: Thu.-Sun. noon-6 p.m.
Rock Wall Wines was started in 2008 by Kent Rosenblum (the founder of Rosenblum Cellars) and his daughter Shauna, shortly after the Rosenblum brand was sold to Diageo Beverage Company. The winery takes its name from the defensive barrier at the former Alameda Naval Base in which it is located. The tasting room hosts a number of East Bay wineries, including Blacksmith Cellars, Carica Wines, Ehrenberg Cellars, JRE Wines, R & B Cellars, and Virgo Cellars. Rock Wall sources its grapes from all over California: Cabernet Sauvignon from Napa Valley, Zinfandel from Sonoma County, Petite Sirah from Contra Costa County, Chardonnay from the Santa Lucia Highlands, and Tannat from Solano County.