Home to six wineries, Treasure Island offers a full day of wine tasting just a short drive across the Bay Bridge. The former naval base has been converted into a hideaway for locals to enjoy flea markets, music festivals, galleries and, of course, wine. There is a winery for every palate on the island, but it’s really a red lover’s dream. Using grapes from all over California, these tasting rooms often offer free tastings of their Cabernet Sauvignon, Zinfandel and Pinot Noir. Three places to visit include the Winery SF, Kendric Vineyards and Sottomarino Winery.