When the Barbican invited us to make an exhibition about ourselves, we originally wanted to use the notoriously 'difficult' spaces of the gallery – a procession of 12 semi-independent rooms on two levels encircling an atrium – to our advantage. Like an art fair, each room could be an isolated booth, displaying one of the many typologies of OMA’s work and preoccupations, from libraries to XL towers to museums to preservation to China to Lagos to energy to museum display techniques.