A filigreed gazebo turns this side yard in Davis, California, into an enchanting setting for alfresco dining. The airy, 11-foot-tall, rusted-iron structure was found at a local nursery for less than $1,000, a candle chandelier and a pair of tall candle stands were added for nighttime ambience. To make an intriguing "rug," the landscape designer glued 12-inch mosaic marble tiles to cast concrete squares, filling spaces between them with decomposed granite.