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…

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Mat Barnes, director at environmental practice CAN, chooses three of his specification favourites

Mat Barnes of CAN chooses three specification favourites

Dividing line, noise mitigator, deferential newcomer – Feilden Fowles’ new gallery at Yorkshire Sculpture Park has its work cut out

Latest addition to Yorkshire Sculpture Park has its work cut out

Veronique de Viguerie captures the cathedral mid-blaze as those watching on from the ground or television feared there would be little left by dawn

Blazing landmark photographed by Veronique de Viguerie above the rooftops

Since the government pulled back from its zero-carbon ambitions, the industry has taken the initiative on sustainable office design and management

Industry takes sustainability initiative

Fiona MacCarthy’s exemplary biography of Walter Gropius presents him as a tragic but unexpectedly sympathetic figure

Tragedies and inspiration of Walter Gropius