The 12-acre federal penitentiary, which ceased operating in 1963, is now a tourist attraction made even more famous by the mystery surrounding the escapes of Morris and the Anglin brothers.

FORBES: Escape From Alcatraz Redux

As well as a tourist attraction, Kew is a world famous scientific organisation, internationally respected for its living collection of plants and scientific facilities.

BBC: Kew is newest 'world wonder'

But in submissions to Mr Justice Weatherup, the barrister also pointed to its ownership of the refurbished 28-bedroom Causeway Hotel, located a five-minute walk from the world-famous tourist attraction.

BBC: Northern Ireland