Sure our kids complained that we had to subject them to more education during our vacation and visit to Northern California. However, if you want to take a break from the wineries in Napa I suggest taking a tour of The Petrified Forest with a tour guide. Imagine, 3.4 million years ago a volcano eruption at Mount St. Helena caused the trees to become petrified. The forest is privately owned and the direct descendants maintain it and keep it open 365 days a year.