dominique perrault: citylights - le campus du pont de sèvres

'citylights' by dominique perrault in boulogne-billancourt, france
all images courtesy dominique perrault
image © RSI studio / DPA / Adagp


internationally-recognized french architect dominique perrault has redrawn plans for the pont de sèvres
towers in boulogne-billancourt, france with 'citylights', a scheme to transform and re-urbanize the western
suburb of paris. stripping the old façades of the pre-existing towers, the design features a double layer skin
that alternates between transparency and silver shades, providing a rhythmic effect to the highly
geometric structures.



exterior overall view
image © RSI studio / DPA / Adagp


situated close to the seine, the buildings are a composition of three towers which each serve as
the main bodies or 'petals' in the layout. hexagonal volumes terminate at different heights, creating a
visual effect similar to an organ flues assembly. working with the original proportions and identity of
the architecture, the new facade design features a 'bracelet' treatment which work with oblique creases
and folds. the finish multiplies the reflections on all perspectives, providing vibrant and light-filled bands
all around the buildings.



from water
image © RSI studio / DPA / Adagp



gardens
image © RSI studio / DPA / Adagp


in order to provide more connection at the natural ground level, the elevated entrance of the towers
is brought back to the same level of the city. the lobby links up the buildings on three levels, offering a
generous space for meetings and exchanges. within nearly 70,000 m2 of office floors, additional programs
such as restaurants, cafeterias, a fitness club, a travellers' lobby, intercompany nursery and more are
offered throughout.



entrance from the forecourt
image © RSI studio / DPA / Adagp



central hall entrance
image © RSI studio / DPA / Adagp



office floor
image © RSI studio / DPA / Adagp



view of direction room
image © RSI studio / DPA / Adagp



transparent facade
image © RSI studio / DPA / Adagp



night view
image © RSI studio / DPA / Adagp



in context
image © RSI studio / DPA / Adagp



pont de sévres today
image © DPA / Adagp



site and context
image © infracom



axonometric projection of the lower ground floor
image © DPA / Adagp



typical floorplan
image © DPA / Adagp



facades and section
images © DPA / Adagp



project info:

client: SAS destours du pont de sevres
promoter: BNP paris immobilier

site area: 20,000 m2
renovation and built area: 84,918 m2

engineering: EGIS batiments (structure, fluid), socotec (control),
EPPAG (facade), AADT (safety), RPO (economist),
le sommier environment (environment consultant), veritas (control),
CSD "associes (coordinator), cabinet legrand (building surveyor),
c.c.i (elevator expert), G.SIR (kitchen)
promoter consultant: sesame conseil
interior decorator: DGID