Visitors to the current exhibition at London’s Barbican Centre on the Bauhuas would be forgiven for thinking that the Bauhaus was a style. The exhibition of course contained many beautiful objects in perspex boxes. There was some detailed explanation of the desire to respond to industrial production but there was no reference – apart from a few photographs of empty studios to the fundamental point. The Bauhaus was not a style – it was a school. Jean-Louis Cohen’s The Future of Architecture since 1889 addressed this issue in a fundamental way. He explains that the school rethought the relationship between art, design and architecture. The school championed the new principles of abstract art to challenge existing building forms and then under Hannes Meyer and Mies Van Der Rohe the shapes of cities.