Sonoma stands out for Spanish Mission era and 19th-century architecture mixed with an arty, laid-back California vibe. "Sonoma is almost certainly more attractive," says Rough Guide author Nick Edwards. "They've still got their little bit of sprawl, but it feels more authentic here." Napa, like its East Coast Hamptons cousins, boasts glamour and glitz--but at a price. Sonoma, on the other hand, is the sort of place where local farmers mingle with vacationing San Franciscans at the tasting bars of the area's many famous wineries. More From Forbes: 15 Lost Cities Of The World The Most Expensive U.S. Cities To Visit The World's Most Unique Luxury Hotels The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.