This year marked the 30th annual Belvedere-Hawthorne Nursery Schools' Valentine's Day Kitchen Tour. Shuttles transported visitors to the five homes, which ranged from an eco-friendly to Cape Cod to a grand 5,500-square-foot Victorian. Marin chefs, including Angelo Servino, held cooking demonstrations and many of the tour-goers opted for the waterfront lunch at the San Francisco Yacht Club.