Project presentation in September 2026

On Wednesday, September 16, 2026, Yaël Braun-Pivet, president of the National Assembly, introduced a project called Open the National Assembly – Make Democracy Live during a press conference. Architect Alain Moatti was present, and the initiative aims to improve public access to the National Assembly.

Transparency concerns and project details

The project has raised questions about transparency, as only the winning design by Moatti-Rivière is publicly known. The other three finalist proposals remain confidential, despite Moatti expressing support for their release. Additionally, it was revealed that the four teams had planned to partially demolish the existing pavilion to connect it with new underground spaces.

Scale and construction specifics

Moatti clarified that the project is not about building a 4,000 m² pavilion, but rather about constructing approximately 600 m² above ground within the current footprint. The total area includes two levels of underground development. The pavilion will include spaces for control, shopping, and cafeterias, with access to mediation areas below.

Cost estimates and planning changes

Moatti disputed the common estimate of 52 or 53 million euros for a 4,000 m² pavilion, placing the cost at around 40 million euros, including scenography. He explained that the controversy arises from confusing the visible structure with the underground construction. A modification to the Preservation and Development Plan (PSMV) for the 7th arrondissement is required, but it would only affect the excavation of the underground levels, not the pavilion’s height, footprint, or design.

Design focus and public accessibility

The project’s main goal is to promote mediation and universal accessibility, ensuring that all visitors, including those with disabilities, can follow the same path and access the same content. The lower level will explore the history of the Republics from 1792 to the present, while the upper level will cover the history of the Palais-Bourbon and its transformations.

Architectural choices and public reaction

Moatti acknowledged that a contemporary building in a historic area might face public resistance, citing the Louvre pyramid as a similar example. He emphasized that modern architecture should complement, not obscure, historical heritage. The façade, described in some media as a "block of glass and steel," is actually a transparent, wavy design with thin stone columns. A prototype was already built in Italy.

Future of the project and potential changes

Moatti stated that a competition alone should not invalidate an architectural design, though he left the door open for changes if a strong argument is made. The façade remains under discussion, particularly with the prefecture. Yaël Braun-Pivet emphasized that halting the project would be illogical, and its future depends on the PSMV modification, expected by mid-2027, with the Assembly Office potentially altering or expanding the project over time.