Barbican's Rain Room: it's raining, but you won't get wet.Architecture and design critic Oliver Wainwright steps into the Rain Room, a technical wonder by contemporary art studio rAndom International. The free installation, which runs at the Curve at the Barbican in London from 4 October until 3 March 2013, uses 2,500 litres of water, falling at 1,000 litres per minute

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Photographies courtesy by Felix Clay via Oliver Wainwright from Guardian