Christina O is a private motor yacht that once belonged to billionaire Greek shipowner Aristotle Onassis. At 99.13 metres long, she was the 45th largest yacht in the world as of 2018.[1][2][3][4]
↑"The Maria Callas Experience onboard the legendary Christina O yacht – archived link". Maria Callas Experience. Archived from the original on 2012-02-05. A bespoke recital of operatic classics with a storyline of the life of Maria Callas by some of Europe's renowned Bel Canto Sopranos including Nelly Miricioiu, (20 & 21 May, 3, 4 & 5 June) Claire Rutter (22 & 29 May) and Mary Plazas (27 & 28 May). During the voyage a tour of the yacht will reveal all the secrets that she has witnessed over the years.