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