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On the sign:
The Sanctuary Knocker
The Sanctuary Knocker adorned the North Door of Durham Cathedral for centuries. It takes its name from the fact that in the Middle Ages people who had committed a great offence could touch the knocker and would be granted sanctuary for 37 days, during which time the person had to choose between trial and voluntary exile.
The hideousness of the monsters features was designed to ward off evil from the place of sanctuary at Durham Cathedral.
It is a source of inspiration for other creative works, some of which you can see as you walk around Durham Cathedral.
This is a replica of the original 12th century bronze knocker, which is on display in Open Treasure, the Cathedrals award-winning museum.
[The logo of Durham Cathedral] DURHAM CATHEDRAL THE SHRINE OF ST CUTHBERT