Do you like strange places, almost unknown to the general public, whose meaning we sometimes struggle to understand? During the 42nd edition of the Journées du Patrimoine (Heritage Days), which return to Paris and the Ile-de-France region on September 20 and 21, 2025, set off on a guided or self-guided tour of these curious, bizarre or simply astonishing monuments or places that you'd never have imagined in the middle of the city, for a weekend.
Hundreds of museums, castles, monuments, churches, concert halls, gardens and other venues open their doors, sometimes exceptionally, for this annual heritage event. It's a jam-packed program, with so many fun things to discover that it can be hard to sort through them all! We offer treasure seekers and Sunday adventurers a small selection of man-made and natural finds not to be missed!
Use this guide to visit some of the region's most unsuspected and unusual places! Between gardens, caves, ancient monuments and other places you'd never think of visiting in the first place, the Journées du Patrimoine (Heritage Days) are waiting for you to enjoy some lovely surprises, often free of charge, in our départements.
Heritage Days 2025 at the Khánh-Anh Pagoda in Essonne - 91, the program
The Khánh-Anh pagoda in Évry-Courcouronnes opens its doors for the Journées Européennes du Patrimoine 2025 on September 20 and 21. Traditional performances, Mandala ceremonies and vegetarian dishes on the program. [Read more]
Journées du Patrimoine 2025: discover the unusual Closerie Falbala - Fondation Dubuffet (94)
La Closerie Falbala, a major work by Dubuffet, is open free of charge during the 42nd Journées du Patrimoine. On Saturday September 20 and Sunday September 21, 2025, don't hesitate to visit (booking required) this 1,500 m² masterpiece of art brut, built in the open air between 1971 and 1976. [Read more]
Heritage Days 2025 at the Maison du Fontainier, at the heart of water history in Paris
Ready to delve into the history of Paris during the Journées du Patrimoine 2025? What better way to do so than to visit the Maison du Fontainier, a major site in the history of water in the capital. Join us this weekend, September 20 and 21, 2025, to discover this unusual place. [Read more]
Heritage Days 2025 at the Osmothèque, the perfume conservatory in Versailles: the program
On September 20 and 21, 2025, the European Heritage Days open wide the doors to a heritage to be smelled, felt and discovered in a whole new way. In Versailles, the Osmothèque reveals the scents of yesteryear and the perfumes that have disappeared, for a visit that tickles the nostrils as much as the memory. Registration opens on September 5, 2025, so mark your calendars! [Read more]
Journées du Patrimoine 2025 at Hôtel de Massa, home to the Société des Gens de Lettres
The Journées du Patrimoine are back in Paris. For the weekend of September 20 and 21, 2025, the Hôtel de Massa, home to the Société des Gens de Lettres, unveils an exhibition on its surrounding wall. [Read more]
Journées du Patrimoine 2025 in Paris: visit to Hôpital Cochin and Cloître de Port-Royal
Take advantage of the Journées du Patrimoine, on September 20, 2025, to explore the Cloître de Port-Royal, at the heart of Hôpital Cochin. It's sure to be an event packed with discoveries! [Read more]
Heritage Days 2025 at the National Veterinary School and Fragonard Museum in Maisons-Alfort (94), program
Looking for an original idea for Heritage Days 2025 in Île-de-France? The École Nationale Vétérinaire de Maisons is one of the must-see sites in the Val-de-Marne! Discover the program for the weekend of September 20 and 21, 2025. Please note that the Fragonard Museum is not open to the general public! [Read more]
Journées du Patrimoine 2025 in Paris at the heart of the Cité Montmartre-aux-artistes
Not far from the Butte Montmartre lies a veritable artists' city, the largest in Europe! During the Journées du Patrimoine 2025 (Heritage Days 2025), we're off to discover this astonishing and inspiring place, in the heart of Paris's 18th arrondissement, this weekend of September 20 and 21, 2025. Here's the program that awaits you. [Read more]
Heritage Days 2025 at the Annonciation troglodyte church (95), the program
On September 20 and 21, 2025, the Journées Européennes du Patrimoine (European Heritage Days) will be opening the doors to the unsuspected treasures of Paris and the Île-de-France region. In Val-d'Oise (95), head for Haute-Isle for a mineral immersion in the region's only troglodyte church, carved right into the cliff. [Read more]
Heritage Days 2025 at the Château royal de Montceaux (77): discover the Château des Trois Reines
How about exploring the remains of the Château Royal de Montceaux? This historic site in Seine-et-Marne is opening its doors to us for the Journées du Patrimoine (Heritage Days) on the weekend of September 20 and 21, 2025. [Read more]
Heritage Days 2025: Guided tour of the astonishing Cyclop in Milly-la-Forêt (91)
During the Journées du Patrimoine 2025, you'll discover a whole host of interesting sights in the Ile-de-France region, including Essonne, where Cyclop, a huge sculpture by Jean Tinguely and Nikki de Saint Phalle, lies hidden in the heart of the Milly forest. [Read more]
Heritage Days 2025 at the Tour Trajane (91): discover Méréville's ancient column
Did you know that a Roman monument overlooks Essonne? Take advantage of the Heritage Days on September 20 and 21, 2025 to discover the Tour Trajane, a curiosity in the town of Méréville! Here's everything you need to know for this year's event! [Read more]
Heritage Days 2025 at the Maison Ferrari (92): discover the program in Clamart
Head for the Hauts-de-Seine for the Journées du Patrimoine 2025, and the Maison Ferrari in Clamart, built by the Duchess of Galliera, which today houses a retirement home in a sublime setting. This weekend, September 20 and 21, 2025, is a unique opportunity to discover this nugget of Hauts de Seine heritage. [Read more]
Heritage Days 2025: discover the conical air-raid shelter at Villenoy (77)
Would you like to discover a nationally unique monument in the Seine-et-Marne region? The famous Villenoy conical air-raid shelter is opening its doors to you this September 20, as part of the 2025 Heritage Days! [Read more]
Heritage Days 2025 in Paris: free tours of the Museum of the History of Medicine
The Journées du Patrimoine return to Paris this weekend, September 20-21, 2025. For the occasion, the Musée d'Histoire de la Médecine is opening its doors to the general public, free of charge. On the program: an unusual and fascinating place to discover in the heart of the former Faculty of Medicine. We tell you more about this fascinating place! [Read more]
Heritage Days 2025 at Espace Niemeyer, headquarters of the Communist Party in Paris
For the Journées du Patrimoine 2025, explore the iconic Espace Niemeyer, headquarters of the French Communist Party. Designed by Brazilian architect Oscar Niemeyer, this futuristic edifice with its daring shapes opens its doors for a unique immersion in an architectural masterpiece, blending history and modernity. [Read more]
Heritage Days 2025 at the Musée des cires pathologiques at Hôpital Saint-Louis, Paris
For the Journées du Patrimoine 2024, Hôpital Saint-Louis is opening the doors of its very special Musée des Moulages on Saturday September 20 and Sunday September 21, 2025. With over 4,800 items, it's the world's largest collection of pathological waxworks. Sensitive souls please refrain! [Read more]
Journées du Patrimoine 2025: exceptional tours and an escape game at the Faculty of Pharmacy in Paris
Are you passionate about science and medicine? Be sure to visit the Faculty of Pharmacy on September 20 and 21, 2025, during the Journées du Patrimoine (Heritage Days). Click here for the program! [Read more]
Heritage Days: exceptional visit to the Bois-Colombes air-raid shelter (92)
History buffs and WWII enthusiasts will be able to take advantage of the Heritage Days on September 20 and 21, 2025, with an exceptional visit to the Bois-Colombes air-raid shelter. We tell you all about it! [Read more]
Journées du Patrimoine 2025: program at the Musée des Années 30 in Boulogne-Billancourt (92),
For the Journées du Patrimoine 2025, plunge into the fascinating world of the 1930s at the Musée des Années 30 de Boulogne-Billancourt. From art deco to emblematic sculptures and paintings, this museum invites you on a journey back in time to the heart of the artistic effervescence of the twentieth century. Here's the program. [Read more]
Heritage Days 2025 in the heart of the Garden of Pagan Divinities at Fontenay-lès-Briis (91)
The Journées du Patrimoine (Heritage Days) are an opportunity to discover the curiosities that abound in the Ile-de-France region. Head for Fontenay-lès-Briis, in Essonne, on September 20 and 21, 2025, to wander through a garden of sculptures that are, to say the least, astonishing... [Read more]
Heritage Days 2025: Le Nymphée nymphée, shell grotto in Viry-Châtillon (91)
The Journées du Patrimoine (Heritage Days) make a comeback on the weekend of September 20 and 21, 2025 in Paris and the Ile-de-France region. This is your chance to explore the Nymphée Nymphée, a mysterious shell-covered cave in Viry-Châtillon, Essonne. What an unusual discovery! [Read more]
So, which curiosity will you be exploring first this weekend?
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]
Dates and Opening Time
From September 20, 2025 to September 21, 2025
Prices
Free
Journées du Patrimoine 2025: unusual outings for an original weekend in Paris
