Hi there,
One of the most popular things to do in Napa Valley is to tour the wineries. You can learn about the winemaking process if you take one of the Napa Valley wine tours during the fall harvest season.
Napa also offers great lovely views such as the
scenic drive on Highway 29. Driving a car and doing your own Napa wine tours allows you to spend as much time as you like in the tasting rooms of Napa wineries. You can purchase bottles of the wines you enjoy to take some of Napa home with you.
Hope this helps
Vacationbuddy