This is Chateau St Georges which I think was designed to make one think of Ausonius’s palace. I took the picture of the two churches from just beyond the stone lions. However, the palace which was NOT at the "Chateau Ausone" winery at St Emilion, was probably on the other side of Montagne, at Chateau St André. The owners make excellent wine, also known as "Petit Corbin". Everything found on this property – statues of Diana and Venus, mosaics, etc, is either in Bordeaux or Libourne museums, but they think there’s still lots more below ground.