Completed in 1912, the property consists of gardens, lakes, woodland and architectural features. It was transferred to State ownership in November 1993 from the Salesian Fathers who had taken care of it since 1941.
The formal Gardens form the centre-piece of the property and were designed by the famous architect, Sir Edwin Lutyens (1869-1944) and probably landscaped by Gertrude Jekyll (1843-1932). It is one of four Gardens in this country designed by him, the others being in the War Memorial Park, Lambay Island and Howth Castle. The Gardens are composed of four elements linked by a terrace that ran along the front of the house which now no longer exists.