Old Faithful Geyser, Napa Valley

Address 1299 Tubbs Lane, Calistoga, CA 94515-1055 Map, Tel (707) 942-6463 Call, Website

Even if you have been to the much-more-impressive Yellowstone National Park, the Calistoga Geyser is worth a stop. This low-key attraction is fun for kids to watch, and there is plenty of space for a picnic. In addition to the Geyser itself, there are also Goats and Llamas to feed.