Journées du Patrimoine 2025 at La Seine Musicale (92): program of events

Did you know? The Journées du Patrimoine is the back-to-school cultural event that awaits you throughout Europe on the weekend of September 20 and 21, 2025. For the occasion, Paris and the whole of the Île-de-France region will be revealing their treasures during this event, which features free visits, unusual events and unusual places opening their doors for the occasion. So, are you looking for a good deal?

Take a trip to the Hauts-de-Seine to discover this strange building, which has been standing in the middle ofIle Séguin in Boulogne-Billancourt since 2017. Conceived as a "musical destination",La Seine Musicale boasts an imposing 6,000-seat concert hall, "La Grande Seine", a 1,150-seat auditorium and various rehearsal and recording spaces.

Designed by architects Jean de Gastines and Shigeru Ban, the Seine Musicale is an architectural challenge, as theauditorium sits on the Seine and "its wooden shell seems to float on the Parisian river". During the Journées du Patrimoine 2025 (Heritage Days 2025), discover all the secrets of this venue, which has quickly become an essential part of the region's cultural life.

• To be read
• Heritage Days 2025: explore the cultural heritage of Hauts-de-Seine - 92
• This Week's Best Deals in Paris and Île-de-France, December 15–21, 2025

Here is the detailed program for the Journées du Patrimoine 2025 at La Seine Musicale in Hauts-de-Seine:

• Open day at La Seine Musicale
  sunday, september 21, 2025 - 10:00 ⤏ 18:00
  

  La Seine Musicale opens its doors on Sunday, September 21, 2025 from 10am to 6pm.

  This open house day offers a wide range of activities: guided tours of the building and concert halls, indoor and outdoor concerts, open rehearsals, dance, masterclasses, discovery of the new immersive installation at SeineLab, a place for experimentation with sound and digital technology, and its workshops for young audiences, virtual reality experiences... and many other surprises! A friendly, free day of open access* to discover the colorful programming of the 2025/2026 season by La Seine Musicale, the Département des Hauts-de-Seine and the residents. The Heritage Days are of course an opportunity to (re)discover the building designed by Japanese architect Shigeru Ban, in association with Frenchman Jean de Gastines, inaugurated in April 2017.

  *Certain events will be accessible by reservation from September 2025, subject to availability, at [www](www.laseinemusicale.com).

  - Le Bal de Paris by Blanca Li (immersive live performance in virtual reality) in the Grand Salon - Sessions times: 11am, 11:30am, 12pm, 12:30pm, 2pm, 2:30pm, 3pm, 3:30pm, 4:15pm, 4:45pm, 5:15pm, 5:45pm

  - 11am-1pm: Jean-François Zygel improvisation workshop (improvisation workshop with amateurs) at the Patrick Devedjian Auditorium

  - 2 p.m. and 3:30 p.m.: "Le concert des oiseaux" by the ensemble La Rêveuse (all ages, 5 years and up), in Petite Seine

  - 3:30 pm - 6 pm: open rehearsal by Insula orchestra conducted by Laurence Equilbey (Beethoven, symphony no. 5) at Auditorium Patrick Devedjian

  - 2:30-12:30 pm / 2:00-5:30 pm: demonstration of SeineLab's sound and digital workshops for young audiences, in 15-minute sessions, with mediators from Ircam-Centre Pompidou.

  At the Club, a family area: open from 10 a.m. to 6 p.m., where you can relax, color, play, discover music videos and take part in virtual reality experiments based on classical music!