Sonoma County is a very special place, its valleys form a pathway to some 500+ world class wineries. Master Wine Tours highly recommends doing one of our Sonoma Tours. This wine country melting pot of soil with weather perfect for expressive wines. The growing season is dry which is optimum for vineyards. But then add the morning fog, consistently warm days with the geological perfection and voile! Perfecto. There are several valleys within Sonoma, all boasting excellence.