Did you know that some Parisian rooftops and industrial basements in Île-de-France only open to the curious on very rare occasions? From 16 to 18 October 2026, the National Architecture Days turn Paris and its surrounding region into a vast open-air playground for enthusiasts and the curious. The idea? To invite locals as well as travelers to view the everyday built environment with fresh eyes, to appreciate engineers' technical feats, and to step inside buildings normally closed to the public.
From renowned architectural studios to the colossal construction sites of the future Grand Paris Express stations, and extending to remarkable residences, contemporary and historic architecture is displayed without filters. The event’s mission is to celebrate heritage in all its forms, whether restoring classic private mansions or reimagining industrial brownfields as vibrant third spaces.
Attention all explorers hungry for novelty: here’s the rundown of the exceptional and promising openings awaiting you this special weekend: the guide is updated as announcements and discoveries come in, stay tuned to uncover even more outing ideas!
Architecture Days 2026: The program at Paris's National Schools of Architecture
France’s national schools of architecture will open several of their Paris sites during Architecture Days, from October 15 to 18, 2026. Discover the event’s program. [Read more]
Journées de l'Architecture 2026 : explore the Cœur des Sources project in Saint-Germain-en-Laye
The city of Saint-Germain-en-Laye is taking part in the latest edition of Architecture Days and invites you to discover the Cœur des Sources project site on October 17, 2026. [Read more]
Architecture Days 2026: go behind the scenes of Paris's Tolbiac port
For the 2026 National Architecture Days, head to the heart of Tolbiac port in the 13th arrondissement to glimpse the behind-the-scenes life of the port in eastern Paris. [Read more]
Journées de l'architecture 2026: discover La Galiotte and its floating chalets in the Yvelines
For the National Architecture Days 2026, head to Carrières-sous-Poissy in Yvelines to discover La Galiotte: an astonishing floating village at the heart of the Parc du Peuple de l’herbe. [Read more]
Architecture Days 2026: Explore the Artists' Retirement Home in Couilly-Pont-aux-Dames
For the 2026 National Architecture Days, visit the Artists’ Retirement Home in Couilly-Pont-aux-Dames, Seine-et-Marne, for an exceptional tour at the heart of this Art Deco heritage. [Read more]
Architecture Days 2026: an exceptional visit to the Bourse du Travail in Bobigny (93)
For the 2026 National Architecture Days, explore the Departmental Trade Exchange in Bobigny, Seine-Saint-Denis: a spotlight on Oscar Niemeyer’s free-flowing curves. [Read more]
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Dates and Opening Time
From October 16, 2026 to October 18, 2026
