Architect Dominique Perrault took an ‘if you can’t beat ’em, join ’em’ approach, with his renovation proposal for the Montparnasse Tower in Paris, by making it bigger and taller. He wanted to change the programme too for the infamous block that triggered a 42-year skyscraper ban in the city in 1973. Adding 50,000m2 to the tower, E+ Vertical City’s purportedly sustainable agenda failed to impress the judges; Nouvelle AOM won the competition proposing to install a Walkie-Talkie-like sky garden – also increasing its height. Aprés, le deluge…