The 20 acre Grade 1 listed garden, set in stately lawns and hedges, has several special features. Away from the formal gardens lie the terraces of the original Elizabethan rose garden - one of the best-preserved examples of their kind. There is also a delightful walled kitchen garden with the original Victorian greenhouses.   The Elizabethan Garden: This was replanted in 1980 by Rosemary Verey, using only plants available in 1580.   The Tous Tous border: This border was named after a pet dog belonging to Lady Clifden's daughter, which is buried in the garden. The 1980 replanting here was started by Rosemary Verey and completed by Rupert Golby as a fragrant border.       The Pond Garden: This is set amongst new yew hedges and was also redesigned by Rupert Golby.   King Charles's Walk: The border recalls the period of Charles I's imprisonment: he was a brisk walker and Lord Pembroke (his keeper) had difficulty keeping up with him.       The Silver Border: This border houses the owner's ever-growing collection of silver-leafed plants.