The famous foyer and stairs.
This is the living room, with the French doors facing the street and the foyer to the back right of the camera position.
Here is the living room in the movie, looking into the "office".
And a the view from the foyer.
And here is the office off of the living room:
This is the view from the living room, across the foyer into the dining room. The family room is through the double doors.
This is the family room which is off of the dining room (through the French doors)
The kitchen has certainly seen an update since the movie days:
The original exposed staircase has been hidden in the renovation. It's behind the stove wall, according to the floor plan.
The breakfast room.
The screen porch sits off of the breakfast room.