Yeah, that's a neat courtyard that Greystone has. In that pic, it's looking east-northeast through the driveway "tunnel" that cuts through the northwest wing of the house. That courtyard is where the actual main entrance to the house is, I believe. The door is on the middle landing of the grand staircase. (IIRC, in the 1991 series that door was replaced by a window for the Old House interiors, with the main entrance being at the other end of the room across from the real main entrance.)