The Journées du Patrimoine (Heritage Days) will be held this weekend, September 20 and 21, 2025, in Paris and the Ile-de-France region. This cultural event is a must-see for all those who like a good time: every year, it invites us to discover our heritage in a different way, through a fantastic program of guided tours andevents in the finest museums, monuments, châteaux, and even in places that are usually closed to the public. Activities that are generally free of charge, so don't miss out!
Heritage Days 2025: this weekend's highlights in Seine-Saint-Denis (93)
The Journées du Patrimoine (Heritage Days) program in Seine-Saint-Denis on September 20 and 21, 2025. The 93 département opens the doors of its factories and century-old buildings. Find out what's on offer this year. [Read more]
Journées du Patrimoine 2025: must-see sites in Paris without delay
The Journées du Patrimoine in Paris and the Île-de-France region take place over the weekend of September 20 and 21, 2025. For the occasion, the region's most beautiful monuments open their doors to you. Here's a round-up of the must-see places to (re)discover them in a whole new way! Click here to find out about this year's most eagerly-awaited events! [Read more]Journées du Patrimoine 2025: unusual outings for an original weekend in Paris
Think you know everything about Paris? Well, we can still surprise you! This weekend, Saturday September 20 and Sunday September 21, 2025, you're in for a real treat at the Journées du Patrimoine! We're sharing our picks for the 42nd Journées du Patrimoine, in Paris and the Ile-de-France region. [Read more]
If you're passionate about air travel or want to discover the heritage of Seine-Saint-Denis, then head for France's leading airport:Roissy-Charles de Gaulle. Built in response to the saturation ofOrly airport, it was inaugurated in 1974 and named after the then President of the French Republic : Charles de Gaulle. And the least we can say is that this Parisian airport has many surprises in store for you. And did you know that it's also the world's second largest hub? That's right!
The Maison de l'Environnement de Paris Charles-de-Gaulle in Tremblay-en-France
An exciting program!
Dates and Opening Time
On September 20, 2025
Location
House of the environment and sustainable development
2 Route du Noyer au Chat
93290 Tremblay en France
Prices
Free
More information
visit at 10 a.m.