In California, wine country tours are second only to Disneyland in popularity with tourists.
According to the California Wine Institute, more than 14 million people visit the California wine regions each year. Of course, wine is grown in 48 out of 58 counties in the state.
Granted, not all those visitors are expert wine tasters, but the popularity of the tours has spurred wineries to offer not only tasting rooms and restaurants, but also music, art shows and theater. In tourism, as in many things, the wine serves as the catalyst.