Heritage curiosity secret guide

One of the Paris Métro’s earliest motor cars to be put back into service soon and opened to visitors.

Ride the Metro the way it was in 1907? That’s the experience awaiting you thanks to a project to rehabilitate one of the Paris transit network’s earliest motor cars, the Sprague-Thomson M.268. Here’s what you need to know.

In the heart of a medieval town just outside Paris, this church hides a lantern of the dead.

In Seine-et-Marne, at the heart of a medieval town listed as a UNESCO World Heritage site, this church hides a peculiarity quite rare in the Paris region: on its façade, you can glimpse a lantern of the dead. But what exactly is it?

Why is this Paris-region church known as the "Prism of Light"?

Along the banks of the Marne, a little-known Art Deco church is bound to surprise! Dubbed the Prism of Light, it hides a hidden treasure of Val-de-Marne.

Saint-Quentin-en-Yvelines: the surprising origin of its name

The name of Saint-Quentin-en-Yvelines, this vast agglomeration in the Yvelines about 20 km southwest of Paris, derives from a small medieval chapel dedicated to a 3rd‑century Roman martyr. A story that few Île-de-France residents know. Here's the story.

Here is the last windmill in Seine-Saint-Denis... and it's open to visitors!

In Montfermeil, northwest of the capital, the city holds an incredible treasure: the Semplin Mill. Built under Louis XIV, it remains standing today—resisting storms and revolutions, with its stones still original. Reopening is scheduled for early April 2026!

Are you familiar with the history of the peach walls? Here’s why this site is designated a Remarkable Garden.

In this commune east of Paris, a remarkable garden hides away, a vestige of the city’s agricultural past. We tell you the story of Montreuil’s Peach Walls.

Hidden treasures of Hauts-de-Seine: discover the secret gems of the 92

On the doorstep of Paris, Hauts-de-Seine hides far more than its famous landmarks. Little-known heritage, surprising anecdotes and small secrets: the 92 can be explored off the beaten path.

Where does that intriguing Renaissance façade, planted in a municipal garden, come from?

In Saint-Germain-en-Laye, a Renaissance façade emerges at the heart of the Jardin des Arts, like a long-forgotten set piece. But what is it doing there exactly, and what is its history?

Pavillon des Indes: a cultural center with the air of an unusual oriental palace on the outskirts of Pairs

Nestled in the Parc de Bécon in the heart of Courbevoie, the Pavillon des Indes is an astonishing example of Oriental palace architecture. Part World's Fair legacy, part lively cultural venue, this exotic gem is well worth a visit.

Cette ancienne apothicairerie royale se cache dans une villa historique et elle se visite gratuitement ! This former royal apothecary’s shop hides inside a historic villa, and it’s free to visit!

It's a fascinating secret tucked away in Saint-Germain-en-Laye, in the heart of a historic residence. Here lies a royal apothecary, the best-preserved in France, and you can discover it during occasional, free tours!

In the Île-de-France region, this building perched atop sculptures is a treasure of contemporary heritage.

In the Yvelines, in Guyancourt, there is a building literally supported by sculptures inspired by the famous Venus de Milo. Here’s more on this architectural curiosity!

This Val-de-Marne church houses the only surviving diorama by Louis Daguerre.

In the Saint-Gervais-Saint-Protais Church in Bry-sur-Marne, an astonishing trompe-l'œil signed by Louis Daguerre, a pioneer of photography, transforms the choir into a Gothic cathedral. A one-of-a-kind treasure in the world, listed as a Historic Monument.

And what if the vineyards of Montmartre weren’t actually the oldest in Paris after all?

Far from Montmartre, the capital’s true viticultural elder leads a quiet, protected life in the 5th arrondissement. This solitary vine, planted in 1874, holds Paris’s longevity record, tucked away in a courtyard at the Collège de France. Discover its astonishing story!

Visit La Hublotière, Hector Guimard's Art Nouveau villa, this summer 2026 in the Yvelines.

Do you know Hublotière? This Art Nouveau villa, designed by Hector Guimard, hides in the heart of Le Vésinet in the Yvelines. Although it is inhabited year-round, it opens its doors to the public each summer, for just a few euros.

The château of Louis XIV’s secret wife, and where Vauban left his only unfinished aqueduct.

Less than an hour from Paris, the Château de Maintenon in Eure-et-Loir reveals the astonishing rise of Madame de Maintenon and the remnants of Vauban’s only civil project. We set off to explore this sublime château and its gardens, and we’ll tell you everything about this heritage treasure.

The inventor of Braille hails from Seine-et-Marne: his former home has been turned into a museum.

In Seine-et-Marne, the museum brings to life the birthplace of the inventor of braille. We tell you more about this little-known cultural venue and the story of Louis Braille, the man who created the language that now bears his name.

This church facing Notre-Dame, one of the oldest in Paris, houses a Byzantine treasure.

In the shade of René-Viviani Square, the church of Saint-Julien-le-Pauvre defies time with quietly captivating discretion. While its façade may look modest, it houses one of Paris's most singular liturgical treasures: a monumental iconostasis. A sacred pause just steps from the bustle of the Seine riverside scene.

This building in the Paris region is the last surviving remnant of the world's first airfield.

In Viry-Châtillon, in the Essonne department, the Port-Aviation Officers' Mess hides an astonishing tale: the story of the world's first organized airfield, inaugurated in 1909, where aviation pioneers let their quirky flying machines roar.

Hidden in an artists' village, this former water mill now houses a museum.

Nestled in an artists’ village in Val-d’Oise, this former watermill has been given a new lease on life and converted into a museum. A discreet, picturesque, history-steeped site that reveals an unexpected facet of Île-de-France’s heritage.

These remains of a Gallo-Roman sanctuary concealed a nymphaeum in the Yvelines.

At the heart of the Vaucouleurs valley, the village of Septeuil conceals a rare relic from Roman Gaul: a monumental nymphaeum. Erected to honor a sacred spring, this ancient sanctuary offers an exceptional testimony to water-related devotional rites in Île-de-France.