It's been under water for almost two centuries, but today visitors to one of north London's locks got a rare chance - to take a tour inside.
Camden Lock has been drained for restoration work, exposing the structure of the chamber.
It'll cost 130 thousand pounds to replace both sets of gates and repair the timber work.
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The former mayor of Tower Hamlets, was forced to step down after he was found guilty of a string of corrupt and illegal practices.
The service is the first to be held in the singer's honour since the private funeral held by the family at Highgate Cemetery on March 29.
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