Still a thriving port city, Pozzuoli can boast to have been the first 'italian' port that the apostle Paul landed in on during his travels his way to Rome from Africa.
It still provides full access to ferries to Capri, Ischia and Procida.
It is also the location of the Solfatara, which is one of the dormant yet smoking volcanos that make up the 'campi flegrei'.
Wether its more famous for its healing powers or its smell is yet to be determined but it still is impressive to drive along some of the roads and see yellow smoke coming right out of the crevices.
I lived in the city for about 1 year and absolutely loved the convenience of having the metro, buses and ferries all at a walking distance.
Its a good way to get away from the hustle and bustle of Naples yet still find great food and beautiful views of the 'golfo di baia'.
Little side note is that it is the birth place of Sophia Loren and its amphitheater claims to have had more christians killed in it than the colosseo in rome.