CITYLIGHTS
BOULOGNE-BILLANCOURT
FRANCE, 2007-2015
TOWER
PR–501
The towers of Pont-de-Sèvres, reinvented by the creation of a central hall and new metal facades, reconnect to the city while capturing and diffusing light.
GALLERY
025
PROGRAM
Rehabilitation and extension of the Pont-de-Sèvres office towers, built in the 1970s by architects Daniel Badani (1914-2006) and Pierre Roux Dorlut (1919-1995). The project includes the creation of a large 1,500 m² lobby, a second entrance onto the Forum district, a large restaurant terrace, and a half-hectare garden. The urban development of the area and new uses are prompting a reassessment of the lobby, which will be redesigned in the fall of 2025 for investors Pimco Prime Real Estate and Gecina.
DETAIL
Situation
Rond-point du Pont-de-Sèvres, Boulogne-Billancourt, France
Year
2007-2016
Status
International competition, winning project
Built surface
85,400 m² (75,000 m² for the rehabilitation, 10,400 m² for the extension)
Client
SAS des Tours du Pont-de-Sèvres-BNP Paribas Real Estate, Boulogne-Billancourt
Architect
Dominique Perrault, architecte, urbaniste
Interior designer and chandelier (“1 immeuble, 1 œuvre” program)
Gaëlle Lauriot-Prévost
Decoration of service areas
Didier Gomez
Engineering office
Egis Bâtiments, Eppag, AVLS, AADT, Socotec, Jean-Paul Lamoureux
DESCRIPTION
The Pont-de-Sèvres towers, designed in the 1970s by Daniel Badani and Pierre Roux-Dorlut, were efficient thanks to their hexagonal plan, but suffered from marked isolation, both from each other and from their urban surroundings. The transformation reverses this situation: a vast hall of 1,500 square meters now connects the towers to a shared base, creating a physical anchor within the city.
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An additional hexagon, built identically, introduces flexibility in layout, while the redesign of the facades completes the revelation of the entire complex: the new crystallized metal envelopes transform the towers into powerful light collectors. Thanks to the prismatic shape of the building clusters, light is reflected and diffused, erasing the traditional dichotomy between north and south faces.
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