Architecture is a form of art that surrounds us in our everyday lives, to the point that sometimes we hardly notice it! Fortunately, the National Architecture Days are there to shine a light on this broad field, in all its richness and history. Each edition features visits, exhibitions, performances, games, and workshops that invite the general public to explore the landmarks of architecture in Paris and in Île-de-France.
So, what can we expect during these Journées de l'Architecture ? What activities await enthusiasts and the curious in the Île-de-France region? More than a hundred venues are taking part in this 2026 edition, including museums, monuments, schools, and places of worship... In Saint-Germain-en-Laye, in the Yvelines, you can even witness a neighborhood redevelopment project underway!
The Cœur des Sources construction site will exceptionally open to the public on Saturday, October 17, 2026. Residents and curious locals can discover the planning process behind an urban neighborhood, the constraints governing such a project, and the needs of the population... Register now to take part in this unique tour.
The Heart of the Springs
In the heart of the Bel-Air district, the Cœur des Sources project is shaping a new educational, cultural, and sports hub, complemented by a new park. The conservatory presents itself as a striking stone architecture, rising above the belvedere and forging a direct link with the historic city.
Committed to the Île-de-France Sustainable Building approach (BDF), it aims for environmental excellence and concretely embodies the city’s sobriety ambitions. A tour to grasp, from the urban gesture to the acoustic detail, how a cultural facility can balance its city-signaling image with practical use.
Subject to site accessibility.
Duration: 1h30
Free, by reservation
Meeting point: 10 boulevard de la Paix
Participation conditions: Free | Booking required - https://billetterie-culture.saintgermainenlaye.fr/
Schedule: Saturday, 17 October 2026 — 10:30 to 12:00
For more architecture outings, check out our guide to the National Architecture Days in Paris and Île-de-France.
National Architecture Days 2026: the lineup for this edition is unveiled
The National Architecture Days return on October 17 and 18, 2026, in Paris and the Île-de-France region. Over the full weekend, you'll have the chance to visit unusual and historic sites, while taking part in workshops and talks with architects. Here's a preview of what awaits... [Read more]
Dates and Opening Time
On October 17, 2026
Location
Heart of the Sources Project
10 Boulevard de la Paix
78100 Saint Germain en Laye
Route planner
Prices
Free
Official website
journeesarchitecture.culture.gouv.fr
National Architecture Days 2026: the lineup for this edition is unveiled
