BESIX builds the Tour Triangle in Paris

24 January 2022

Unibail-Rodamco-Westfield (URW) has awarded BESIX the construction of the Tour Triangle in Paris, designed by the architects Herzog & De Meuron, winners of the prestigious Pritzker Prize.

The 180-metre high Tour Triangle has been designed to comply with the BREEAM Excellent (minimum) and HQE Exceptional environmental certifications, as well as the Effinergie label. The solutions implemented include geothermal systems, a district heating network and energy and heat recovery systems, as well as a bioclimatic façade and 1,000 m² of photovoltaic panels.

Pierre Sironval, Deputy CEO of BESIX Group : “BESIX is very proud to build the Tour Triangle, a technically, logistically and architecturally demanding building. We are particularly grateful for the trust placed in us by Unibail-Rodamco-Westfield in awarding us the construction of this building. It joins the prestigious buildings built by BESIX around the world, including the Grand Egyptian Museum in Cairo and the Burj Khalifa in Dubai, the world's tallest tower.”

The planning, logistics and construction methods have been developed by BESIX Engineering, the in-house design office of BESIX, in order to optimally reduce the impact on local mobility, the neighbourhood and the operation of the Parc des Expositions. BESIX Engineering will also carry out the execution studies for the structure and will provide support for those dedicated to the façade.

Andres Penaloza, Director of BESIX France : “The Tour Triangle is the latest addition to our ongoing projects in the Paris region. In perfect collaboration with URW, our engineering and operational teams have worked meticulously to optimise the construction process and deliver the high quality required by our client. All our teams are now mobilised.”

The Tour Triangle will include office space, a conference centre, but also a health centre, a cultural centre, a crèche, a hotel and a restaurant. The building's carbon footprint will be controlled, in particular through the use of low-carbon materials, including a minimum of 50% concrete with reduced CO2 emissions, and recycled materials, in particular for the aluminium facades. The tower site will also offer 100,000 hours of social integration in partnership with EPEC, the Ensemble Paris Emploi Compétences association.

The tower, which will generate 5,000 direct and indirect jobs, will be completed in 2026. BESIX will work closely with the project management team appointed by URW: the engineering firms Setec and Egis, respectively in charge of the design studies for the structure and fluids, and Artelia as the execution project manager.

The Tour Triangle will be the third high-rise building built by BESIX in Paris. It joins the Dexia (CBX) and Carpe Diem towers in the La Défense district. The Carpe Diem Tower was the first tower to be awarded both HQE and Leed certification and the first Leed Platinum certified tower in France.


BESIX is a group based in Brussels, Belgium, present in 25 countries and on 5 continents, in the construction, real estate development and concessions sectors. Its iconic achievements include the Burj Khalifa in Dubai, the world's tallest tower, European Parliament buildings in Brussels and the Grand Egyptian Museum on the plateau of the Giza pyramids.
BESIX Engineering, the group's engineering department, enables BESIX to carry out complex and unique projects, particularly in technical and environmental terms.

In 2021, BESIX delivered the French Pavilion for the Dubai World Expo, an example of bioclimatic architecture, and is building the Saint-Denis Pleyel station of the Grand Paris Express, the Nice Airport Promenade building complex in Nice, the Deloitte University EMEA in Bailly-Romainvilliers and the Ambroise Paré, Pierre Cherest and Hartmann clinic in Neuilly-sur-Seine.

Its emblematic projects in France include the Santé Pôle in Melun, the new EDF Research and Development Centre in Paris-Saclay and the structural work on Terminal 2E at Charles De Gaulle Airport. In the Parisian district of La Défense, BESIX has built the Dexia Tower (CBX), as well as the Carpe Diem Tower.

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