What wineries in Napa Valley should I make sure to see?

Wildcat Mountain: Carneros and Sonoma's Coolest Vineyard

From online source:

MacRostie planted 4 acres of syrah, 23 acres of pinot noir and 23 acres of chardonnay, all on volcanic soil with elevations ranging from 500 to 700 feet overlooking San Pablo Bay. His Wildcat Mountain Vineyard is the coolest site in the area and straddles the Carneros and Sonoma Coast appellations. The site itself is 1500 acres of pastureland where dairy cattle still roam the undulating hillsides as they have for decades. From the very top of the vineyard, assuming it's a clear day, you can see the Golden Gate Bridge, Oakland and the Mayacamas mountains to the west. But it is the fog, funneled through San Pablo Bay from the cold Pacific Ocean that is the most frequent guest on Wildcat Mountain. "Often we're not above the fog or below it," says MacRostie with a grin, "we're in it." And if it's not the fog, it's the wind. The vines are literally windswept, bent back by the consuming force of wind off the bay, running up the mountain and pummeling the vines like a boxer with too much confidence.

Castello di Amorosa

Visit Napa Valley's authentic-styled, 12th century medieval Tuscan castle and experience our finest Reserve Wines. Castle entrance, Castle tour AND Reserve Wine Tasting in Private Castle Room are all included. Only available Mon-Thurs

$35 per person

Pine Ridge – Barrel to Bottle Tasting

Cabernet lovers, pay attention!! This exclusive, formal, tasting takes you from Barrel to the bottle. With barrel samples of the Rutherford Cabernet Sauvignon, Oakville Cabernet Sauvignon and our highly acclaimed Stags Leap District Cabernet Sauvignon. Formal seated wine service presented in Riedel crystal, accompanied by a selection of artisan cheeses tailored to accompany each wine. Immediately following your tasting, you will be escorted to the Estate Garden where a gourmet lunch prepared by the renowned Oakville Grocery, awaits $55 pp

Famous for being the backdrop winery for a '80s television show you may want to visit Sterling Vineyards aslo.

http://www.sterlingvineyards.com/Default.aspx?Retu...

Here is a nice pic of their Sky Tramway to tour.

http://www.sterlingvineyards.com/OurWinery/VisitSt...

We have been to and enjoyed the first two and will likely attend the Pine Ridge Barrel tasting soon.