Naples is the regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 967,069 within the city's administrative limits as of 2017. Its province-level municipality is the third-most populous metropolitan city in Italy with a population of 3,115,320 residents, and its metropolitan area is the second-most populous metropolitan area in Italy and the 7th-most populous urban area in the European Union.
First settled by Greeks in the first millennium BC, Naples is one of the oldest continuously inhabited urban areas in the world. In the ninth century BC, a colony known as Parthenope or Παρθενόπη was established on the Island of Megaride. In the 6th century BC, it was refounded as Neápolis. The city was an important part of Magna Graecia, played a major role in the merging of Greek and Roman society, and was a significant cultural centre under the Romans.
It served as the capital of the Duchy of Naples, then of the Kingdom of Naples, and finally of the Two Sicilies until the unification of Italy in 1861.