Tour Triangle in Paris: everything we know about the future Radisson Blu hotel on the 13th floor

First announced in 2008, approved in 2015, contested and then relaunched in 2021, the Tour Triangle is finally in its final stretch. The 180-metre skyscraper designed by Swiss architects Herzog & de Meuron · known for Beijing’s Olympic Stadium and London’s Tate Modern · is expected for delivery in late 2026. At the heart of the project, a 4-star Radisson Blu hotel with 128 rooms will occupy floors from the 13^th level upwards, approximately 50 metres above the Parisian rooftops.

Here is everything known to date about this new Parisian hotel: its design, services, dining and opening timeline.

The Tour Triangle is the first very tall building by the Basel duo Jacques Herzog and Pierre de Meuron in Paris. Pritzker Prize laureates in 2001, the Swiss architects are known for the Tate Modern in London, the National Stadium in Beijing (the “Bird’s Nest” of the 2008 Olympics) and the Elbphilharmonie in Hamburg. The tower adopts a slender pyramidal silhouette · a true triangle in profile · which tapers upwards to limit shadow projection on the neighbourhood. On the Avenue Ernest Renan side, the base is articulated by an 8-metre-high glazed plinth designed to house a 150-metre-long retail avenue.

Construction, entrusted to Bouygues Bâtiment Île-de-France, began in late 2021 after more than a decade of procedures and legal challenges. The Covid-19 crisis having weakened Unibail-Rodamco-Westfield, the project’s historic owner, the company partnered with AXA in 2021 to finalise the financing of the operation, estimated at over €700 million. In autumn 2025, the tower reached its final height of 180 metres and the installation of the glazed skin · composed of more than 4,000 panels assembled in triangles · is in full swing.

With its terraces overlooking the Eiffel Tower, its restaurant and bar on the 13^th and 14^th floors, and its unique design, this hotel will become a new unmissable destination in Paris.

· Triangle press dossier

The Radisson Blu Paris Tour Triangle hotel will occupy approximately two technical floors and around ten accommodation levels from the 13^th floor upwards. 128 rooms and suites are planned, with interior design entrusted to the Paris-based duo Dion & Arles, the studio run by Caroline Dion and Stéphane Arles, already known for their work on several high-end Parisian hotels and restaurants. The guiding concept: to maximise the natural light and panoramic views offered by the glazed facade, with a materials palette evoking classic Parisian hotels · wood, brass, velvet, marble · reinterpreted in a contemporary register.

The choice of Radisson Blu, the upscale brand of Radisson Hotel Group, places the hotel in the superior 4-star segment · one notch below the Radisson Collection (5-star) already present near the Arc de Triomphe. The brand targets an international business clientele (the Porte de Versailles exhibition centre sits directly opposite, making this one of the capital’s primary MICE hubs) as well as leisure guests seeking a design hotel with Eiffel Tower views without paying palace rates from the 1st arrondissement.

The project announces a restaurant and a bar spread across the 13^th and 14^th floors, with outdoor terraces overlooking the Eiffel Tower. The menu concept and the chef’s identity have not yet been officially communicated, but the two-level configuration suggests a rooftop-style format comparable to the Skybar at the Pullman Tour Eiffel or 43 Up On The Roof at the Pullman Montparnasse.

Good news for non-hotel guests: Triangle plans a 3,000 m² public belvedere at the summit of the tower, reachable by panoramic lifts. A potential new tourist destination for the capital, which currently has only a handful (Eiffel Tower, Tour Montparnasse, Arc de Triomphe, Galeries Lafayette). The belvedere will be accessible directly from the base of the tower, without passing through the hotel.

The hotel is only one component of the programme. Triangle claims a rare mixed-use scheme in Paris: 75,000 m² of offices (floors 2–12 and 15–38), the hotel (13–14), technical floors, the public belvedere at the summit, and above all, a base of services open to the neighbourhood.

• A 150-m retail avenue opening onto Avenue Ernest Renan, with 400 m² of neighbourhood retail
• A crèche for 60 children (among the largest available in Paris) with outdoor space
• A 600 m² cultural centre open to all, programming under development
• A 500 m² health centre bringing together several medical professionals
• A 300 m² café-bakery and a 150 m² tea room / patisserie

This local integration is part of the concessions negotiated with the City of Paris in 2015 at the final vote on the project: Tour Triangle had to answer criticism about becoming an “office tower ghetto” and actively contribute to neighbourhood life. The concept of the “15-minute city” championed by Anne Hidalgo is clearly present.

The overall delivery of Tour Triangle is officially announced for late 2026. The typical sequence for a hotel project will then involve a fit-out phase of several months (room finishing, kitchen installation, commissioning), followed by a pre-opening testing period (“soft opening”). Based on comparable timelines (Pullman Tour Eiffel, Cheval Blanc Paris, Bulgari Paris), the commercial opening of the Radisson Blu Paris Tour Triangle is expected to fall between late 2026 and the first half of 2027.

Reservations are not yet open as of today on Radisson Hotel Group platforms or on booking aggregators (Booking, Expedia, Hotels.com). We will update this article as soon as reservations become available. In the meantime, the official Triangle contact form allows you to register your interest and receive the first pre-opening communications.

Sources: official Triangle press dossier (tour-triangle.com), Wikipedia FR (Tour Triangle, last consulted May 2026), Unibail-Rodamco-Westfield press releases, public archives of the City of Paris (2015 vote), official Triangle visuals (hotel, belvedere, lobby, architecture renderings). Article updated 22 May 2026 · information subject to change before delivery.