They can also walk through the huge orangery built by the Adam brothers which has now been converted into a gallery to display the fine Lansdowne collection of paintings and sculpture.
The one exception to that is the orangery , which is where the restaurant is found.
Arthur Myers, who has worked on the estate near Sproatley for more than 40 years - and at the age of 83 still looks after the orangery - was at the opening with wife Jasmine.
It was originally constructed as an orangery for Augustus the Strong who was an avid art collector.
The Royal Botanic Gardens in Kew, one of London's great wonders, had its origins in the seventeenth century, when a private family estate development included a noted orangery .
One of the long-running projects has been the orangery .
Among its attractions are its trees along with a large collection of wisteria, grown inside the orangery .
Conservation - minded neighbours have objected to his plans to attach an orangery to his house to make him feel more at home in this bleak heath.
All this, together with the stone walls, recalls a Victorian conservatory or orangery rather than a conventional museum, and is only possible because most sculpture, unlike paintings, is not vulnerable to light.
The conservatory is framed by two anchor points, the entrance at the east end and the orangery to the west.