One of the must-sees for tourists in California is Napa. To be honest, the wines are overpriced, and the landscape is underwhelming. Go a bit further north, to the Russian River Valley, and enjoy the scenery by bike.
You will know that your are doing this with the right sort of people when they cross the river like this
even though there is a bridge and they didn’t have any wine (yet).
The winemakers were friendly and let us taste for free even though they knew we would not buy much wine.