San Francisco, California
I have to say it was the highlight of our trip. It was an amazing tour and the tour guide (Ken) was great. He made it fun and very informative. We toured 4 wineries and had a great lunch at one of them. By far the best tour I was ever on. If I had to rate it from one to five. I will give it the full five. It was that good. From the tour to the ferry ride at the end. Amazing. Worth seeing Napa this way.