If you’re like most Americans, your image of Spain is actually the region of Andalucía, famous for windswept landscapes, whitewashed hill towns, flamenco, and gazpacho. While visitors gravitate to the region’s big cities of Granada, Sevilla, and Córdoba, Andalucía’s “Route of the White Hill Towns” (Ruta de los Pueblos Blancos)—a charm bracelet of cute villages…