Gaeta is a seaside resort in the province of Latina, in Lazio, Italy. Set on a promontory stretching towards the Gulf of Gaeta, it is 96.5 kilometre…Gaeta is a seaside resort in the province of Latina, in Lazio, Italy. Set on a promontory stretching towards the Gulf of Gaeta, it is 96.5 kilometres from Rome and 133 km from Naples. The city has played a conspicuous part in military history; its walls date to Roman times and were extended and strengthened in the 15th century, especially throughout the history of the Kingdom of Naples.