Christina O , former superyacht of Aristotle Onassis , up for sale . Onassis wed former U.S. first lady Jackie Kennedy on board luxury vessel . `` It really was the last word in opulence and many personalities were attracted by its ability to offer them some privacy , not just by its magnificence . '' Score: 7 Backdrop to lavish 1950s parties , attended by Marilyn Monroe , Frank Sinatra .
Christina O , former superyacht of Aristotle Onassis , up for sale . Onassis wed former U.S. first lady Jackie Kennedy on board luxury vessel . Score: 7 Backdrop to lavish 1950s parties , attended by Marilyn Monroe , Frank Sinatra .