Set amid fertile farming country, this charming market town takes its name from the Colle Armerino, one of the three hills on which it is built. It is actually two towns in one: the original Piazza was founded by the Saracens in the 10th century on the slope of the Colle Armerino, while a 15th-century expansion to the southeast was redefined by an urban grid established in the 17th century. Laced with atmospheric, labyrinthine streets, the town makes a convenient base if visiting the extraordinary ancient mosaics at nearby Villa Romana del Casale.