Overview


Two towers 219 m and 121 m high, connected by a  footbridge.

Architect: Christian de Portzamparc.

Tower sisters

Assignment


Structural design and engineering

Preliminary and detailed design, tender documents, works supervision and building inspection

Owner

Unibail

Key figures

Surface: 

93,300 m2 gross floor area

120,390 m2 gross internal area

Period of services

Key challenges

Designing technical facilities to meet ambitious objectives in terms of individual comfort and energy performance