Don't miss this Private Tasting for 6, paired with charcuterie and cheese, at the Vintner's Collective, a multi-winery tasting room. It's housed in Napa's oldest commercial building, an 1875-built brewery and, later, a saloon and brothel. Here visitors can sample 18 wineries, some of which release wines in remarkably limited quantities (as few as 75 cases) and high prices (up to $75 a bottle). For novices, it's a chance to sample expensive, obscure wines.