Loch Fyne Oysters and Inveraray Castle are both on the shore of Scotland's longest sea loch. The castle has been the seat of the Dukes of Argyll, chiefs of Clan Campbell, since the 18th century, and the current duke and his family still reside there to run the family business. Certainly they got a boost from the folks at Downton Abbey when they traveled north to visit their Scottish relatives!
