Jackie Kennedy Onassis home

Jackie Kennedy Onassis' childhood home is on the market for a modest $44 million. Hedge fund manager David Ganek just listed the 2-story apartment at 740 Park Avenue where Jackie spent her youth from ages 2 through seven.

If you happen to have an extra $44 million laying around your bank vault, there's a few things you should know before you call your broker. No mortgages are allowed in the world's richest building. Come with cash or don't come at all. And by "cash," they mean assets of $100 million liquid. You must also be approved in a vetting process by board members who won't even show up if they've never heard of you. And maintenance fees in this 19-story building of 31 units exceeds $50K a month.

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