Le Corbusier started working on the commission and made drafts and a wooden model but died before he could provide definitive plans.

[2] The Palais de la musique et des congrès in its first form was built 1973–1975 in a completely different style and shape than what Le Corbusier had envisioned.

The hexagonal and comparatively low building was centered around the city's main auditorium, the 1,870 m2 (20,100 sq ft) Salle Érasme (1,876 seats after modernization).

[5][4] As described by the Archello website, the architects "decided to further develop and expand on the existing central motif of equilateral triangles" and "continued the use of the typical hexagon in the new buildings.

"[4] "In December 2016, the recently completed project was nominated for the European Prize for Contemporary Architecture – Mies van der Rohe Award 2017.