ShareThis California Campus Tours Both of our facilities in California are open to the public daily. We welcome you to come and explore everything we have to offer at each location. Tour of Historic Greystone Enjoy a tour of the historic Greystone building, home to the CIA’s California degree and certificate programs, food and wine programs for enthusiasts, Brother Timothy’s Corkscrew Collection, the Rudd Center for Professional Wine Studies, the Ghirardelli Chocolate Discovery Center, and more. Tickets are $10 per person and can be purchased through the Spice Island Marketplace Store. Tours are offered daily at 11:30 a.m. with an additional offering at 3:15 p.m. on Saturday and Sunday. Children under 12 may attend free of charge. Groups of 10 or more will need to make a reservation by calling our main line at 707-967-1100. Tour ticket holders will receive a 10% discount on same-day store purchase. Tours of Copia Tours will be coming soon to our new Copia facility. Please check back for more details!