Are you one of those seasoned explorers who want to discover Paris and the surrounding region like no other? We know what you mean, and that's why we're on the lookout for those rare opportunities to infiltrate places that are usually closed to the public for a special visit.
Whether in the heart of emblematic monuments or in the midst of little-known treasures, the Parisian calendar is punctuated by special occasions that are not to be missed! Whether it's during cultural events such as the Journées du Patrimoine (Heritage Days), or on a more exclusive basis, this guide will help you spot those popular tours that will take you off the beaten track.
In Paris and Ile-de-France, historic nuggets and little-known spots invite you to discover their best-kept secrets. And don't forget to keep your eyes peeled: the page is updated as we post new listings and discoveries, so we recommend that you consult it regularly. And a final word of advice: be ready to book when you can - places can go very quickly!
European Heritage Days 2026: must-see openings and exceptional tours not to be missed in Paris
Les Journées du Patrimoine 2026 à Paris, c’est aussi l’occasion de découvrir des lieux habituellement fermés au public. Here’s the list of sites that will open their doors to the public specially for this weekend of September 19–20, 2026. [Read more]
A free guided tour of the hidden and restored decorative schemes at the Chancellerie d'Orléans in Paris
During free and exceptional guided tours, admire the magnificent interiors of the Chancellerie d'Orléans, rescued from demolition and restored, just a stone's throw from the National Archives. [Read more]
Free late-night opening at the Bourse de Commerce: reserve your top pick for Saturday, September 5, 2026
Want to visit the Bourse de Commerce’s collections? Take advantage of the free after-hours opening, held on the first Saturday of every month, to discover this must-see art venue in Paris. The next date to note in your calendar: Saturday, September 5, 2026. [Read more]
The Château d’Ormesson and its vast estate will open to the public for the first time this summer, 2026.
One of Val-de-Marne’s best-kept secrets reveals its treasures to the public this summer for the first time, from July 27 to September 4, 2026. The Château d'Ormesson, a 16th-century estate that has remained in the same family for generations, invites walkers to explore its historic grounds and its sumptuous interior. [Read more]
Guided tours behind the scenes of rugby and the France XV at Marcoussis, in Essonne
From July 1, 2026, the iconic Marcoussis National Rugby Center will lift the curtain on its secrets with a set of unprecedented guided tours. From training pitches to tech-innovation hubs, discover this site in the heart of Essonne that invites fans to dive into the France XV’s preparations. [Read more]
Louvre Museum: the date of the next free late-night opening to experience on the first Friday of the month
Here's the smart move to take advantage of at the start of each month: the Louvre Museum offers free admission to all visitors on the first Friday of every month after 6 p.m. Next date to note: September 4, 2026. [Read more]
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! [Read more]
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! [Read more]
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. [Read more]
Exceptional tour of one of the oldest farms in the Île-de-France region this summer 2026
One of the oldest working farms in Île-de-France is opening its doors to the public on August 31, 2026, for a guided tour organized by Archéa. This rare opportunity allows visitors to explore a historic agricultural site nestled in the heart of the Paris region. [Read more]
In Seine-et-Marne, this medieval keep opens its doors to the public during exclusive guided tours.
It is a remnant of a medieval castle in Seine-et-Marne, now a captivating piece of heritage. The Houssoy Keep opens its doors to visitors during special guided tours, offering a unique glimpse into its secrets and history! [Read more]
The cellars of Pontoise (95): plunge into the city's mysterious underground world
Beneath the medieval streets of Pontoise, in the Val d'Oise, lies an astonishing treasure: medieval cellars that bear witness to the town's past. An unusual, original and little-known tour of the Île-de-France region awaits you, upon reservation. Find out more about Les caves de Pontoise, an astonishing place within easy reach of the Navigo transport network! [Read more]
