Constructing Worlds review the battered, beautiful and barely credible

Barbican Art Gallery, London From 1930s America to Pyongyang now, the work of 18 photographers captures the extreme and humdrum nature of buildings Constructing Worlds at the Barbican in pictures There is a photograph in the Barbicans new Constructing Worlds exhibition of a building by the Mexican architect Luis Barragán which, amazingly, is in black-and-white. Whats amazing about this? Its just …