The Napa Valley is 60 miles north of San Francisco, 27 miles long and in some parts less than a mile wide. It is considered among California's finest wine appellations, particularly for Cabernet Sauvignon, prompting some to dub it "the Paulliac of California". Napa Valley is far more compact than its neighbor Sonoma, bordered to the south by the shoreline of the San Francisco Bay; to the north, east and west by the redwood-covered Mayacamas Mountains. It is said that the Napa Valley has more different types of soil than all of France, and its microclimates are so varied that it is possible to gain 20F degrees of temperature in the brief trip up valley from Carneros to Calistoga. Napa is blessed with singular geologic and climatic diversity, resulting in extraordinary vineyards. The gift of nature, partnered with state-of-the-art technology and winemaking skill, has consistently propelled Napa Valley wines to the head of the world wine class.