In the bay of Douglas, the Duke of Athol has formed his garden of Castle Mona. It is a remarkable spot, and displays traces of much taste and skill in the planning of its walks and disposal of its trees, shrubberies, hothouses, parterres and vegetable plots; but, since the interruption of his Grace's regular visits to the Island, it has been almost wholly neglected.' (William Bennet, Sketches of the Isle of Man By A Tourist, 1829, M 02608)
On the sketch is written: "Entrance Gates, Castle Mona."