It was designed in the Baronial style by Dublin architect James Rawson Carroll, and is constructed from a yellow-brown sandstone brought by sea from County Donegal. It comprises a gabled range with a central tower topped by a conical roofed turret.
In 1916, the house was cleared and remained empty until 1950. It was inherited in July 1939 by Edwina Mountbatten, who, with her husband Admiral of the FleetLouis Mountbatten, made several improvements, installing electricity and a mains water supply.[3] After his wife's death in February 1960, Mountbatten, the last Viceroy of India, spent his summers there until his death when his boat was blown up off the coast of Mullaghmore by the IRA in August 1979.[2][4]
The castle and surrounding lands are now owned by the estate of Hugh Tunney (1928–2011), a businessman from Trillick in County Tyrone, who bought the castle and 1,200 hectares (3,000 acres) of the surrounding estate in 1991 after having leased it for many years.[2]