Arbores Laetae

For the Liverpool Biennale, the architects of Diller Scofidio + Renfro designed a spectacular installation called "Arbores Laetae", or "Joyful Trees". It's made up of a grid of trees, of which some are fitted on an electrical plate, and rotate slowly around spectators. There's something quite disturbing (and quite thrilling, too) about the trees that move. It's like a cross-over from a thriller-movie (it could be Hitchcockian?), that's also addressing the commonplace division between artificial and natural.