On the banks of the Seine, the three office buildings that make up Eos rise up like a glass trimaran. Designed by the architecture firms Arquitectonica and Bridot Willerval, Eos combines the silk-screened glass and stainless steel of its façades with the natural colours of its environment. The three buildings have a green roof and are surrounded by a 4,000 m² green area imagined by the landscape designer Paso Doble. Eos won the Pierre d'Or prize in 2007, awarded to the best property development projects in France.
Opened in 2009, Eos is the first of the five buildings designed by Bouygues Immobilier in the new Seine Ouest business district in Issy-les-Moulineaux. Bought by the insurer Generali, Eos is now occupied by the head office of Microsoft France (80%) and the Danish pharmaceutical firm Lundbeck.
Above all, Eos was one of the first buildings of its size to be awarded HQE® High Environmental Quality certification, reflecting a set of measures to reduce energy consumption.
- In the offices, radiating ceiling panels use heat from the urban network in summer and cold from a chilled water circuit in summer to meet all heating and cooling needs, limiting the need for electricity.
- An ice storage system limits the amount of electricity needed to power the building's cooling systems.
- Recovered rainwater is used to fill toilet cisterns and to water green areas.
- Noise pollution is reduced by acoustic insulation of the façades reinforced to 40dBA.
- Soft mobility solutions are encouraged and the site benefits from a two-lane cycle path.
Like the other four buildings designed by Bouygues Immobilier in the Seine Ouest business district, Eos is highly energy-efficient, using 50% less energy than the requirement under 2005 Thermal Regulations.
39 - 45 Quai Franklin Roosevelt et 4 rue Bara
92130 Issy-les-Moulineaux, France
- Surface area: 46 000 m²
- Capacity: 3 300 occupants
- Year of handover: Mai 2009
- Architect: Agences Arquitectonica et Bridot-Willerval