Bozar, Brüssel

2026: This renovation was focused on two halls, Salle M and the Studio, along with their cloakrooms and dressing rooms and aimed at highlighting premises and the architect Horta's work while improving its functionality. The renovation took place while Bozar remained open to the public.

2005: The Palais des Beaux-Arts, listed building, designed by Victor Horta in the 1920s (and inaugurated in 1928), needed some adaptations in order to host the music festival Klara in the Horta Hall, and multimedia events in the Terarken hall(s), which can now be divided into three rooms thanks to acoustic sliding doors.

Technische Details

Renovierungen/Umbauten Bozar   www.bozar.be

Ort Brussels, Belgium. Listed building.

Bauherr Palais des Beaux-Arts (Bozar).

Saal M + Studio

Baukosten 6.8 million €.

Zeitrahmen Design: 2018-2019. Construction: 2020-2025. Opening: February 2026.

Architekt(en) Atelier d'Architecture Pierre Hebbelinck, Belgium   www.pierrehebbelinck.net

Theaterplaner ArtSceno, Switzerland   artsceno.ch

Zahl der Sitzplätze The M Hall, or the former chamber music-hall of 400-seats and the Studio; the former recital hall, of 210 seats; respectively of 630 et 252 m².

Nutzung Cultural entity dedicated to exhibitions, festivals and lectures gravitating around music, architecture and art in general.

Leistungsumfang Comprehensive acoustic consulting services including acoustic concept, room acoustics, sound isolation and noise control design, construction supervision and post-opening services.

Beteiligte Berater Yann Jurkiewicz, Thomas Wulfrank, Eckhard Kahle, Kahle Acoustics.

Saal Henry Le Bœuf + Saal Horta + Terarken Halle(n)

Ort Non-available.

Zeitrahmen Design: 2002-2005.

Architekt(en) Georges Baines (Multimedia rooms Terarken); Barbara Van der Wee (Master plan and Henry Le Bœuf Hall doors); Christian Kieckens (Hall Horta installation), Belgium   www.christiankieckens.be

Zahl der Sitzplätze Terarken hall: 750-seat, or three 250-seat rooms thanks to acoustic sliding doors, total area 1 000 m². Horta hall: 500-seat, total area 500 m². Henry Le Bœuf hall: 2 100 seats.

Nutzung Chamber music and amplified music, exhibitions, projections, performances, conferences, multimedia.

Leistungsumfang Acoustic consulting services for the new multimedia rooms — Terarken hall(s) — (acoustic sliding doors concept); concept and supervision of acoustical installations in Horta hall for the Klara music festival; acoustical improvements of the Henry Le Bœuf hall doors; and participation to the Bozar master plan elaboration.

Beteiligte Berater Eckhard Kahle, Project Manager, Nathalie Faillet, Kahle Acoustics.

01/11BozarHall Horta. Due to the installation of discreetly integrated acoustic ceiling banners and absorbing wall panels, the foyer was transformed into a 500-seat chamber music hall for the Klara Music Festival. Foto © Kahle Acoustics
02/11BozarHall Horta. Foto © Kahle Acoustics
03/11BozarTerarken Hall(s). Newly transformed room for multimedia projects and exhibitions for up to 775 seated people. Sliding acoustic partitions allow subdivision into two or three smaller rooms with 250 seats each. Foto © Kahle Acoustics
04/11BozarSalle M. Acoustic tests and tuning of the thoroughly renovated hall with apparent reinforced concrete and Canadian walnut wall and ceiling panelling. Foto © Kahle Acoustics
05/11BozarSalle M. Acoustic tests and tuning of the thoroughly renovated hall with apparent reinforced concrete and Canadian walnut wall and ceiling panelling (as seen from the stage). Foto © Kahle Acoustics
06/11BozarSalle M. View from the rearmost seat onto the thoroughly renovated hall with apparent reinforced concrete and Canadian walnut wall and ceiling panelling. Foto © Kahle Acoustics
07/11BozarSalle M. Final touch prior to the inaugural concert by Nikola Meeuwsen pianist, 1st prize winner of the 2025 Queen Elisabeth international competition, in the thoroughly renovated Salle M with apparent reinforced concrete (in keeping with Victor Horta's wish for the Bozar building which opened in 1928) and Canadian walnut wall and ceiling panelling. Foto © Kahle Acoustics
08/11BozarSalle M's wall and ceiling panelling in Canadian walnut with apparent reinforced concrete beam structure. Foto © Kahle Acoustics
09/11BozarSalle M. Lateral hallway (stage right), which reverberant acoustic volume contributes to the room acoustics. Foto © Kahle Acoustics
10/11BozarLateral hallway (stage right), which reverberant acoustic volume contributes to the room acoustics. Foto © Kahle Acoustics
11/11BozarSalle M. Lateral hallway (stage right), which reverberant acoustic volume contributes to the room acoustics. Foto © Kahle Acoustics