This namazing south east city of Sicily is a layers of human site, a collection of treasures. settled by the greeks, was the capital of the island for long time. Today is a blooming of architettural style that collects a full encounter of cultures. The huge Neapolis shows the biggest celebreations buildings of the greek/roman age. In  Ortigia you will see old greek temples, and one of the most beautiful church "Il Duomo", a good numbers of museums of history and tradition, amazing squares, incredible alleys which introduce you in neighbourhoods as the jewish section, medioeval and baroque nobles house and churches. I'm sure you wouldn't want miss it!