This episode visits Briarcliff Mansion, GA, USA; Nazi Gold Tunnels (Ksi?? Castle), Poland; Grand Sofar Hotel, Lebanon; and Mount Shannon House, Ireland.Near the Polish city of Wa?brzych, a fairy-tale castle perched on a cliff top conceals a vast subterranean tunnel network linked to an enduring legend of lost Nazi gold. In the American city of Atlanta is a millionaire's mansion, built from the riches of a world-famous business empire, that became entangled in a web of controversy. In Ireland, a country estate that was embroiled in a violent struggle for freedom. And a hedonist paradise in Lebanon that would find itself caught in the crossfire of a nation tearing itself apart.