Elmgreen & Dragset's new commission Powerless Structures, Fig. 101 for the Fourth Plinth in Trafalgar Square was unveiled by Joanna Lumley on Thursday 23 February.
See a film of the unveiling here
Read an interview with the artists by Adrian Searle for the Guardian:
Off their rockers: the artists behind the latest addition to the Fourth Plinth
Elmgreen & Dragset Unveil Powerless Structures, Fig. 101
February 20 2012