‘We put a cow in the video, to signify reality. It peed everywhere’

‘We put a cow in the video, to signify reality. It peed everywhere’
The most prestigious award in architecture goes to three-person Spanish company who avoid the international limelight and ‘flee from fashions’
Muralist JR has cast a spell over the Paris museum’s glass canopy in a work that recalls the Renaissance’s eye-fooling tricks. Now can we have one for the Shard?