American wine:
            
            
              California
            
            
              comes from the vineyard lands
            
            
              of Napa Valley! Most of Napa
            
            
              Valley’s wineries are small
            
            
              operations, although a few
            
            
              large wineries, such as Robert
            
            
              Mondavi Winery, Beringer,
            
            
              and Sutter Home, are based in
            
            
              Napa County.
            
            
              Many Napa Valley winer-
            
            
              ies own large vineyards,
            
            
              which surround their
            
            
              properties like gor-
            
            
              geous manicured
            
            
              lawns. Other wineries
            
            
              don’t own vineyards
            
            
              but instead buy
            
            
              their grapes from
            
            
              independent grape
            
            
              growers or buy juice
            
            
              or bulk wine from
            
            
              other wine produc-
            
            
              ers. And some Napa
            
            
              Valley wine produc-
            
            
              ers don’t have their
            
            
              own wineries; they
            
            
              bring their grapes to
            
            
              custom-crush wine
            
            
              facili-
            
            
              ties, which they rent — all
            
            
              for the distinction of making “Napa
            
            
              Valley wine.”
            
            
              Napa Valley’s climate
            
            
              Although not a large area, Napa Valley
            
            
              has an enviable range of soil types and
            
            
              climatic differences:
            
            
              Mountains surround Napa Valley on both
            
            
              sides — the Mayacamas Mountains to the
            
            
              west and the Vaca Mountains to the east.
            
            
              The Napa River runs north-south through
            
            
              the valley. Soils vary according to how
            
            
              close to the river a vineyard is or how far
            
            
              into the hills or mountains it is, among
            
            
              other factors.
            
            
              The climate in Napa Valley is generally
            
            
              warm and dry, but a dominant feature
            
            
              of the region is the combination of cool
            
            
              winds and fog that sweeps up the valley
            
            
              from the San Pablo Bay in the south.
            
            
              Summer weather in the southern part
            
            
              of the valley, in wine districts such as
            
            
              Carneros, Yountville, and Oakville, can be
            
            
              distinctly cooler than that of the Calistoga
            
            
              area at the north end of the valley.
            
            
              Napa Valley sits next to Sono-
            
            
              ma County. The Mayacamas
            
            
              Mountains separate the two
            
            
              coun-
            
            
              ties
            
            
              from
            
            
              each
            
            
              other
            
            
              for
            
            
              most of
            
            
              their
            
            
              length, but in the
            
            
              south,
            
            
              the terrain is open and
            
            
              flatter,
            
            
              and driving from one county to the other
            
            
              is easier. In fact, the two counties share
            
            
              a wine district, Los Carneros, at their
            
            
              southern ends.
            
            
              Napa Valley is considered one of the top
            
            
              wine growing regions in the world. The
            
            
              combination of Mediterranean climate,
            
            
              geography, and geology of the valley are
            
            
              conducive to growing quality wine grapes.
            
            
              The Napa Valley is located in Northern
            
            
              California, about 50 miles northeast of
            
            
              the San Francisco Bay Area and about
            
            
              60 miles west of Sacramento. The Napa
            
            
              Valley is 30 miles long and 5 miles at its
            
            
              widest point.
            
            
              In 1968, Napa Valley vintners and others
            
            
              in the community had the foresight to
            
            
              preserve open space and prevent future
            
            
              over-development by enacting the nation’s
            
            
              first Agriculture Preserve.
            
            
              The Charles Krug Winery, established in
            
            
              1861, was Napa Valley’s first commercial
            
            
              winery. The number of wineries grew rap-
            
            
              idly until,