No list of rich or famous island owners would be complete without paying our respects to the man who's credited for starting the whole trend. Aristotle Onassis purchased Skorpios, off the coast of his native Greece, on the occasion of his marriage to Jackie Onassis in 1968. Once the flamboyant billionaire had set the tone for over-the-top purchases, others were bound to follow.
In the years since his death, Skorpios remained in the hands of his daughter Athina until 2010, when it fell into the equally-fabulous hands of Giorgio Armani in return for $190m. Other parties believed to have been interested in buying it at the time included Madonna and Roman Abramovich, so it's something of a 'must have' when it appears on the market. No work has been done on the island other than the provisions Onassis originally made for his wife - the iconic 'Pink House,' some botanical gardens and tennis courts for her to play on.