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Serpentine Sackler Gallery opens doors for first time

25 September 2013 Last updated at 16:23 BST

A £14.5m extension to the Serpentine Gallery is set to open its doors for the first time.

A former nineteenth century gunpowder store has been transformed into the Serpentine Sackler, with a new gallery and restaurants.

Brenda Emmanus was given an exclusive preview at Kensington Gardens.

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