Travellers are just discovering that London Underground station Sloane Square has a secret river that runs through it.

The station looks a bit different now – but the blue culvert is still carrying the River Westbourne (Picture: Independently London/Flickr) But its journey takes an unexpected turn at Sloane Square.

The River Westbourne over Sloane Square station. (Image: Matt Brown/Flickr) Back in 1868, engineers were busy connecting the lines of the Tube when they hit a problem at Sloane Square.

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