Fondi (; Southern Laziale: Fùnn) is a city and comune in the province of Latina, Lazio, central Italy, halfway between Rome and Naples. As of 2017, the city had a population of 39,800. The city has experienced steady population growth since the early 2000s, though this has slowed in recent years. Before the construction of the highway between the latter cities in the late 1950s, Fondi had been an important settlement on the Roman Via Appia, which was the main connection from Rome to much of southern Italy. Geography Fondi is the main town of the Plain of Fondi (Piana di Fondi in Italian), a small plain between the Ausoni and Aurunci mountains and the Tyrrhenian Sea. The plain includes three lakes and is agriculturally very fertile. Most in evidence are greenhouses for the production of early crops for sale in Rome. The long sandy beach stretches from Sperlonga in the south-east to Terracina in the north-west and lies along the Gulf of Gaeta, with views (when the weather is clear) to the Pontine Islands. It is marked by a somehow well-preserved, typical Mediterranean coastal dune landscape. The territory of Fondi is partially included in the Regional Natural Park of Monti Aurunci. History Fondi has an ancient history, beginning with early settlements about 1000 BC: later the area was settled by the Italic tribes of Aurunci and, subsequently, Volsci. According to the legend, it would have been founded by Hercules in memory of the killing of Cacus. The first historical reference to Fondi dates to 338 BC, at the time of the Latin War, when its inhabitants (together with those of the nearby Formia) gained minor Roman citizenship status (civitas sine suffragio). After a failed attempt of revolt led by Vitruvius Vaccus (330 BC), Fondi remained a Roman prefecture; later (188 BC) it received full citizenship, with a government led by 3 aediles. The importance of Fondi lay in its position across the old Via Appia. Begun in 312 BC, it was for more than two millennia the main roadway from Rome to southern Italy. Today the historical centre and surrounding wall of Fondi still form a square, as in the Roman camp walls, whose decumanus was formed by the city tract of the Via Appia. After the Gothic War and the Lombard conquest of Italy, Fondi remained a dominion of the Eastern Roman Empire. Later a part of the