Journées du Patrimoine 2025: transport works for the weekend of September 20 and 21

Would you like to explore the Ile-de-France region over the special Heritage Days weekend of September 20 and 21, 2025? It's a good idea - there are plenty of nuggets to discover, but be sure to check out the works and RER and Transilien line closures beforehand!

The Journées du Patrimoine 2025 (Heritage Days 2025 ) take place this weekend , September 20 and 21, and invite you to discover hundreds of unusual places, monuments usually closed to the public and other little-known spots, thanks to guided tours or fun activities, in the capital but also throughout theIle-de-France region. But to get there, you first have to get around, on foot, by bike or by public transport. As every year, there are a number of roadworks and closures that may require a little extra organization!

Heritage Days 2026: Historic monuments to discover in Paris and Île-de-France
The historic monuments of Paris and the Île-de-France region throw open their doors during the 43rd European Heritage Days. On Saturday, September 19 and Sunday, September 20, 2026, come discover these history-filled gems through delightful programs for the whole family. [Read more]

This time, no metro lines are closed, and everything should be running if the strike of Thursday September 18 is not renewed, but for the RER and Transilien, some towns are less accessible than normal. Check thelist of work sites now, so as not to find yourself at a disadvantage if certain places are difficult to access, especially in the regions of Yvelines, Val d'Oise or Seine-Saint-Denis.

Work during the summer

RER B

Traffic will be interrupted between Paris Nord and Aulnay-sous-Bois on Sunday

RER C

Trains are direct from Choisy le Roi to Juvisy in this direction only.
Villeneuve le Roi, Ablon and Athis Mons stations are not served by trains to Juvisy.

RER D

Traffic disrupted between Goussainville and Creil

Line J

Traffic is interrupted between Issou Porcheville <> Mantes la Jolie
Traffic is interrupted between Les Mureaux <> Mantes la Jolie via Poissy with a replacement bus service.
Traffic is interrupted between Paris Saint-Lazare <> Val de Reuil

Line K

Traffic is interrupted between Paris Gare du Nord and Mitry - Claye on Sunday

Line L

Traffic is interrupted between Suresnes Mont Valérien <> Versailles Rive Droite / Saint-Nom la Bretèche
In addition, fewer trains are running between La Défense <> Suresnes Mont Valérien

Line N

Mantes-la-Jolie services cancelled
Traffic is interrupted between Versailles Chantiers and Plaisir - Grignon
Traffic is interrupted between Paris Montparnasse and Dreux

U line

Traffic disrupted between La Défense and La Verrière

Journées du Patrimoine 2025 in Paris: traffic restrictions to be expected
The Journées du Patrimoine (Heritage Days) return to Paris and the rest of the Île-de-France region on Saturday September 20 and Sunday September 21, 2025, with a host of must-see attractions. However, to ensure the smooth running of the event, the Préfecture de police de Paris has announced temporary traffic restrictions in the center of the capital. Find out more about the restrictions. [Read more]