See inside Highclere Castle
Before the TV series launched, a few hundred tourists turned up daily when the castle was open to the public; now up to 1,300 guests a day pass through the heavy doors.
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The Saloon is the heart Highclere Castle, just as it is on Downton Abbey.
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The State Dining room was transformed by Sir Charles Barry into the Stuart Revival style of interior decoration.
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The Library of Highclere Castle, designed by Thomas Allom, who took over the completion of the Castle on the death of Sir Charles Barry.Paul Grover
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Lady Fiona Carnarvon is the current chatelaine of Highclere Castle.Paul Grover / Rex Features
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