Italian average of 18.1 percent (minors) and 19.9 percent (pensioners). The average age of Syracuse resident is 40 compared to the Italian average of 42. In the five years between 2002 and 2007, the population of Syracuse declined by 0.5 percent, while Italy as a whole grew by 3.6 percent. The reason for decline is a population flight to the suburbs, and northern Italy. The current birth rate of Syracuse is 9.75 births per 1,000 inhabitants compared to the Italian average of 9.45 births. , 97.9% of the population was of Italian descent. The largest immigrant group came from other European nations (particularly those from Poland, and the United Kingdom): 0.6%, North Africa (mostly Tunisian): 0.5%, and South Asia: 0.4%. Tourism Since 2005, the entire city of Syracuse, along with the Necropolis of Pantalica which falls within the province of Syracuse, has been listed as a World Heritage Site by UNESCO. This programme aims to catalogue, name, and conserve sites of outstanding cultural or natural importance to the common heritage of humanity. The deciding committee which evaluates potential candidates described their reasons for choosing Syracuse because "monuments and archeological sites situated in Syracuse are the finest example of outstanding architectural creation spanning several cultural aspects; Greek, Roman and Baroque", following on that Ancient Syracuse was "directly linked to events, ideas and literary works of outstanding universal significance". Buildings of the Greek and Roman periods The city walls The Temple of Apollo, at Piazza Emanuele Pancali, adapted to a church in Byzantine times and to a mosque under Arab rule. The Fountain of Arethusa, on the Ortygia island. According to a legend, the nymph Arethusa, hunted by Alpheus, took shelter here. The Greek Theatre, whose cavea is one of the largest ever built by the ancient Greeks: it has 67 rows, divided into nine sections with eight aisles. Only traces of the scene and the orchestra remain. The edifice (still used today) was modified by the Romans, who adapted it to their different style of spectacles, including also circus games. Near the theatre are the latomìe, stone quarries, also used as prisons in ancient times. The most famous latomìa is the Orecchio di Dionisio ("Ear of Dionysius"). The Roman amphitheatre. It was partly carved out from the rock. In the centre of the area is a rectangular space which was used for the scenic machinery. The Tomb of Archimede, in the