Old Faithful Geyser, Calistoga
Old Faithful Geyser of California is one of the most visited places in the American West. It is in Calistoga and this can be planned during your day trip to Napa. The water erupts every 15-3o minutes and there is also a small section of area for barn animals. Kids can feed the goats with grass. It is a great place to visit with kids and you can picnic there. You can read more about this geyser here.