Widely regarded as one of Sicily's finest restaurants, Duomo comprises a cluster of small rooms outfitted like private parlours behind its stained-glass door, ensuring a suitably romantic ambience for chef Ciccio Sultano's refined creations. The menu abounds in classic Sicilian ingredients such as pistachios, fennel, almonds and Nero d'Avola wine, combined in imaginative and unconventional ways. Reservations essential.