View of Gaiola Island
|Adjacent bodies of water||Gulf of Naples|
|Metropolitan City||Metropolitan City of Naples|
(former Province of Naples)
The island takes its name from the cavities that dot the coast of Posillipo. The Latin caveola ("little cave") passed through the region's dialect to become Caviola. Originally, the small island was known as Euplea, protector of safe navigation, and was the site of a small temple. 
The island is very close to the coast, reachable with a few strokes of swimming. It is assumed that originally it was nothing more than an extension of the promontory opposite and was artificially separated only at a later time at the behest of Lucullus.
In the 17th century the island was virtually littered with Roman factories, while, two centuries later, the island served as a battery in defense of the Gulf of Naples.
At the beginning of the 19th century, the island was inhabited by a hermit, nicknamed "The Wizard", who lived thanks to the almsgiving of fishermen. Soon after, the island saw the construction of the villa that occupies it today and which was at one time owned by Norman Douglas, author of Land of the Siren. In the 1920s there was a cable car that connected the island to the mainland.
Naples's legend has considered Gaiola a "cursed island", which with its beauty hides a "restless fate" , the "Gaiola Malediction."  The reputation developed from the frequent misfortunes and premature deaths in the families of its 20th century owners. For example, in the 1920s, it belonged to the Swiss Hans Braun, who was found dead and wrapped in a rug. A little later, his wife drowned in the sea. The next owner was the German Otto Grunback, who died of a heart attack while staying in the island's villa. A following owner, the pharmaceutical industrialist Maurice-Yves Sandoz, committed suicide in a mental hospital in Switzerland.
Its subsequent owner, a German steel industrialist, Baron Karl Paul Langheim, was dragged to economic ruin by "wild living." The island has also since belonged to: Gianni Agnelli, the turinese owner of Fiat Automobiles, who suffered the deaths of many relatives; and to J. Paul Getty, who experienced from afar the suicide of his oldest son, death of his youngest son, and kidnapping of a grandson, before his own death.
The last private owner of the island was Gianpasquale Grappone, who was jailed. Newspapers talked again about the "Gaiola Malediction" in 2009, after the murder of Franco Ambrosio and his wife Giovanna Sacco, who owned a villa opposite the island.
The island is now the property of the government of the Campania region, and a protected area within it. It includes the Parco Sommerso di Gaiola (Underwater Park of Gaiola) marine reserve in the Gulf of Naples. 
- Areamarinaprotettagaiola.it: official l’Area Marina Protetta, Parco Sommerso di Gaiola website—(in Italian), homepage + links, videos..
- Areamarinaprotettagaiola.it: L'Archeologia del Parco Sommerso di Gaiola (island's archaeology)—(in Italian)
- Isola La Gaiola Is Freakishly Cursed, But Freakishly Beautiful Huffington Post: "Isola La Gaiola Is Freakishly Cursed, But Freakishly Beautiful", September 2014.
- https://web.archive.org/web/20130930174827/http://www.difesa-oggi.it/archives/0007495.html. Archived from the original on September 30, 2013. Retrieved June 5, 2013. Missing or empty
- "Dai suicidi della Gaiola al delitto Grimaldi La Posillipo funesta raccontata da Braucci - Corriere del Mezzogiorno". Corrieredelmezzogiorno.corriere.it. Retrieved 2016-03-02.
- "Canale Otto Campania » Blog Archive » Verità Imperfette – Sesta Puntata – La maledizione della Gaiola". Canaleotto.it. 2012-04-16. Retrieved 2016-03-02.
- Bianca De Fazio (2009-04-16). "La maledizione della Gaiola da Paul Getty a Grappone - la Repubblica.it" (in Italian). Ricerca.repubblica.it. Retrieved 2016-03-02.
- "Sciagure, suicidi e misteri: č la maledizione della Gaiola | Metropolis Archivio Storico". Metropolisweb.it. 2009-04-15. Retrieved 2016-03-02.
- Ways blog: "The Gaiola Underwater Park: Naples below sea level"