In discreet cupboards nestled between the double doors of the drawing and smoking rooms, the 5th Earl of Carnarvon once stashed Egyptian artifacts sourced from his archaeological adventures.

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Since the hotel opened its doors in 1929 its rooms and famous banquet hall - the Great Room - have housed royalty, politicians and celebrities including actor Orson Welles.

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The counters left their counting tables and court administrators locked the doors to the rooms to safeguard the ballots, which were then packed into boxes.

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Located in the boreal forests near the village of Harads in northern Sweden, the Treehotel opened its doors in the summer of 2010 and offers six guest rooms.

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Believe it or not, you can actually visit the Forbidden Corner in Middleham, North Yorkshire, an insane amusement park infested with talking statues, shrinking rooms, giant statues, secret doors and endless underground labyrinths.

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Some rooms got a more drastic overhaul, with new flooring, doors and countertops.

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Hidden in rooms several doors down from the meeting room, a half-dozen attorneys and their assistants sat ready to burst through the door if the nuns needed help.

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While there is currently no consistent public access, the rooms will be open on 12 and 13 September 2014 as part of the Oxford Open Doors weekend.

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