Cambados is the unofficial capital of the Albariño wine region — a small town on the eastern shore of the Ría de Arousa with a centro histórico of granite mansions, narrow lanes, and one of the most beautiful squares in Spain, the Plaza de Fefiñáns. The whole town is small enough to walk in an hour and densely packed with places to eat and drink.
Time your visit for the first Sunday of August, when Cambados hosts the Fiesta del Vino Albariño, declared of National Tourist Interest and now in its seventh decade. The rest of the year you'll have the plazas to yourself. The ruins of the 15th-century Igrexa de Santa Mariña, half-collapsed inside their original walls, are particularly atmospheric in early evening light.