Wow, great find, MB. The lack of trees in the picture really emphasizes the
sprawling nature of the house's design. Looks like it's probably a picture taken soon after the house was completed.
On the "Famous movies filmed at Greystone" page, there is
no mention of the 1991 DS!
Of course, technically speaking, that was a TV series and not a movie, but still... It was quite a significant filming project at the estate, n'est-ce pas?