A house that just went on the market in Greenwich, Connecticut is, officially, THE most expensive home that's ever gone on sale in U.S. history.

It's a single-family home that's listed at $190 MILLION.  It's a  13,519-square-foot house that's spread across 50 acres on TWO ISLANDS on the Long Island Sound . . . 12 bedrooms . . . nine bathrooms . . . six garages . . . a 75-foot pool with spa . . . a grass tennis court . . . an elevator . . . guest cottage and lots of rolling lawns and gardens.

This property hasn't been on sale since 1904.  It's only had two owners in its history.

Maybe that new Powerball winner will take a look at it.