One of only two towns in Sonoma County built around a public square (the other farther north is Healdsburg), Sonoma exudes a sense of California history unlike any other North Bay town. To stroll among the Plaza's historic adobe and wooden structures -- some built before California became a state -- transports visitor and resident alike to a simpler time. The chic boutiques and eateries, however, are very of the moment and showcase Sonoma's bounty. Plus, you can dine al fresco almost any time of the year.