Parc André Citroën

This guide to Parc André Citroën in Paris traces the site from fifty-five years as a working car factory on the Seine, through a decade of silence after the last machine left, to designers Gilles Clément and Alain Provost's radical 1992 plan for a bare, geometric lawn instead of a nostalgic garden. It follows the tethered helium balloon that has lifted visitors above the rooftops since 1999, and the two glass greenhouses that are all that remain of the factory's silhouette. Stand on the central lawn to see how the industrial skyline was rebuilt as garden.