Napa Valley is widely considered one of the top American Viticultural Areas in California, and all of the United States, with a history dating back to the early nineteenth century.
By the end of the nineteenth century, there were more than 140 wineries in the area.
Several still exist in the valley including Charles Krug Winery, Schramsberg, Chateau Montelena, Nichelini and Beringer.
Viticulture in Napa suffered a setback when prohibition was enacted in 1920.
 Furthering the damage was an infestation of the phylloxera root louse which killed many of the vines through the valley.
These two events caused many wineries to shut down and stalled the growth of the wine industry in Napa County for years.
But for many Italian and Swiss families as farm labor in the vineyards, Prohibition offered the unique opportunity for the growing and shipping of grapes to immigrant homewinemakers across the country.
Charles Forni, who received a gold coin as his first U.S. dollar upon arriving, rose to be a large shipper.
The Mondavi family came West from the Minnesota ore-country to Lodi to ship grapes to the "Italian Club" miners.
When Prohibition stopped in 1933, the price of grapes crashed to below $24 per ton.
Then A.P. Giannini, founder of Bank of America at San Francisco, started to promote to rebuild the commerce of wine and viticulture.
Following the Second World War, the wine industry in Napa again began to grow.
But cattle and prunes were king.

In 1965, Napa Valley icon Robert Mondavi broke away from his family's Charles Krug estate to found his own.
This was the first new large scale winery to be established in the valley since before prohibition.
After the establishment of the Mondavi estate, the number of wineries in the valley continued to grow, as did the region's reputation.
Consumer trends followed the 60s free lifestyle for experimentation.
The old "paesano" customers of "dego red" gallon jug wines changed to young women who considered white wine, not beer, as their new drink of choice for romance.
Robert Mondavi Winery attracted new wine aficionados by introducing the larger, 1.5-liter wine bottle for an image of affordable quality.

In addition to large scale wineries, Napa Valley's boutique wineries produce some of the world's best wines.
The producers of these wines include but are not limited to: Araujo, Bryant Family, Monticello Vineyards, Ceja Vineyards, Chimney Rock Winery, Colgin Cellars, Dalla Valle Maya, Diamond Creek, Dominus Estate, Duckhorn Vineyards, Dunn Howell Mountain, Grace Family Vineyards, Harlan Estate, Husic, Kistler, Jericho Canyon Vineyards, Marcassin, Rutherford Hill Winery, Screaming Eagle, Sequoia Grove, Shafer Hillside Select, Steltzner Vineyards, and Bouchaine Vineyards.

Today Napa Valley features more than four hundred wineries and grows many different grape varieties including Cabernet Sauvignon, Chardonnay, Merlot, Zinfandel, and other popular varietals.
As many as five million people visit the area each year.
Napa Valley is widely considered one of the top American Viticultural Areas in California, and all of the United States, with a history dating back to the early nineteenth century. By the end of the nineteenth century, there were more than 140 wineries in the area. Several still exist in the valley including Charles Krug Winery, Schramsberg, Chateau Montelena, Nichelini and Beringer. Viticulture in Napa suffered a setback when prohibition was enacted in 1920.  Furthering the damage was an infestation of the phylloxera root louse which killed many of the vines through the valley. These two events caused many wineries to shut down and stalled the growth of the wine industry in Napa County for years. But for many Italian and Swiss families as farm labor in the vineyards, Prohibition offered the unique opportunity for the growing and shipping of grapes to immigrant homewinemakers across the country. Charles Forni, who received a gold coin as his first U.S. dollar upon arriving, rose to be a large shipper. The Mondavi family came West from the Minnesota ore-country to Lodi to ship grapes to the "Italian Club" miners. When Prohibition stopped in 1933, the price of grapes crashed to below $24 per ton. Then A.P. Giannini, founder of Bank of America at San Francisco, started to promote to rebuild the commerce of wine and viticulture. Following the Second World War, the wine industry in Napa again began to grow. But cattle and prunes were king.
In 1965, Napa Valley icon Robert Mondavi broke away from his family's Charles Krug estate to found his own. This was the first new large scale winery to be established in the valley since before prohibition. After the establishment of the Mondavi estate, the number of wineries in the valley continued to grow, as did the region's reputation. Consumer trends followed the 60s free lifestyle for experimentation. The old "paesano" customers of "dego red" gallon jug wines changed to young women who considered white wine, not beer, as their new drink of choice for romance. Robert Mondavi Winery attracted new wine aficionados by introducing the larger, 1.5-liter wine bottle for an image of affordable quality.
In addition to large scale wineries, Napa Valley's boutique wineries produce some of the world's best wines. The producers of these wines include but are not limited to: Araujo, Bryant Family, Monticello Vineyards, Ceja Vineyards, Chimney Rock Winery, Colgin Cellars, Dalla Valle Maya, Diamond Creek, Dominus Estate, Duckhorn Vineyards, Dunn Howell Mountain, Grace Family Vineyards, Harlan Estate, Husic, Kistler, Jericho Canyon Vineyards, Marcassin, Rutherford Hill Winery, Screaming Eagle, Sequoia Grove, Shafer Hillside Select, Steltzner Vineyards, and Bouchaine Vineyards.
Today Napa Valley features more than four hundred wineries and grows many different grape varieties including Cabernet Sauvignon, Chardonnay, Merlot, Zinfandel, and other popular varietals. As many as five million people visit the area each year.
Napa County, California