No trip to the Bay Area is complete without a visit to the Old Faithful Geyer of California. This natural phenomenon is located in Calistoga, part of the beautiful Napa Valley. The winning bidder will be provided a family pass, admittance for up to 2 adults and 3 children (ages 6-12). Children under 6 years of age are admitted for free! Enjoy their geothermal exhibit hall, snack bar, picnic area and the many exotic animals on the property to view and feed.

See: http://www.oldfaithfulgeyser.com