Only on 7: A tour of the Kennedys' country retreat in Virginia

ABC7 was granted exclusive access to the only home ever designed by a sitting president and first lady. Wexford was Jackie Kennedy's sanctuary after President John F. Kennedy was assassinated.

And "the house that Jackie built" -- the Kennedys' country retreat -- is in our back yard.

One hour west of Washington, down an unpaved tree-lined road, it was the Kennedys' Virginia Camelot.

"Jackie didn't like Camp David, insisted they have their own property," says Darrell West, a Brookings Institution historian.

The grounds were large enough for the president's ride -- Marine One -- to land in the back yard and for Mrs. Kennedy to ride horses right through it.

We see the room where John-John learned to salute, the stables for Caroline's pony, and beneath them their father's bomb shelter with an underground tunnel from the house. And the wiring is still there ... as is a haunting history.

There's the JFK bathtub, extra long to allow for his back problems. And the library's high hearth.

The Kennedys spent their final weekend as a family at Wexford.

50 years later, the footprint of the home remains the same.

Wexford played another important part in history. In 1980, the owner loaned it to Ronald Reagan for debate prep against Jimmy Carter and then for the transition months before he moved in to the White House.

Now the retreat is on the market for the first time in nearly a quarter century -- $7.9 million.