Despite a major theft two years ago, Rancho Obi-Wan on a former chicken ranch in Petaluma, is still the world’s largest collection of Star Wars memorabilia. Steve Sansweet has amassed an estimated 300,000 pieces – action figures, games, books, even rare German Star Wars toilet paper. Not everything is on display but you can play vintage video games and pinball machines for free. Docent tours of 1-3 hours are $75. Book 6 weeks in advance.