Essonne

Want to hunt for bargains in the Paris suburbs? Here are the flea markets and garage sales for the weekend of September 12–13, 2026.

Want to hunt for bargains around Paris? On September 12 and 13, 2026, several flea markets and garage sales will be held in the Paris suburbs, offering plenty of second‑hand finds, retro goodies, and real deals.

Boussard Park, a listed Art Deco garden, unveils its secrets for Heritage Days 2026.

Craving a unique getaway in Île-de-France? For the 2026 Heritage Days, discover the Boussard Park in Lardy, Essonne, a rare Art Deco garden listed as a historic monument.

Heritage Days 2026: visit the secret estate of Sillery in Essonne

Fancy a unique outing in Île-de-France for the 2026 Heritage Days? Head to Épinay-sur-Orge to discover Sillery Park and its château.

Fête de l'Humanité 2026: road disruptions expected in Essonne

Because of the upcoming edition of the Fête de l’Humanité in Essonne, the department’s prefecture is warning of road disruptions on Friday 11, Saturday 12 and Sunday 13 September 2026, with heavy turnout expected in several areas around Base 217 and traffic described as “strongly affected.” More details to come.

Line 18 in Essonne: a big free festival at Massy-Palaiseau station this Saturday

Line 18 of the Grand Paris Express is staging a free celebration at its Massy-Palaiseau station in Essonne, featuring music, artistic performances, and tours of the platforms, this Saturday, September 12, 2026, ahead of the metro’s launch. Tours, food, and a vibrant atmosphere are on the menu.

Heritage Days 2026: this museum invites you to discover traditional trades.

Plunge into the daily life of artisans of old at the museum « À la rencontre des vieux métiers » in Bouray-sur-Juine during Heritage Days 2026. A cultural outing in Essonne to discover forgotten know-how and period tools.

Halloween 2026 at CNRS: an escape room and talks in a château in Essonne

For Halloween 2026, the CNRS opens the doors of Button Castle in Gif-sur-Yvette on Friday, October 30, from 7 p.m. to 11 p.m. This second “Terrifyingly Scientific Evening” brings together three roundtables on the afterlife, mummies, and dark matter, plus an escape room focused on bats. The event is only available by registration, starting September 21, 2026.

Heritage Days 2026 in Forges-les-Bains: the outings schedule

The weekend of September 19–20, 2026, head to the commune of Forges-les-Bains in Essonne to make the most of Heritage Days.

In Bures-sur-Yvette, tours of the mineralogy museum for Heritage Days 2026

For Heritage Days 2026, the Mineralogy Museum in Bures-sur-Yvette will exceptionally open its doors. Discover a scientific treasure unique to Essonne.

Journées du Patrimoine 2026 : a historic cyanotype workshop at the Departmental Archives (91)

Immerse yourself in the secrets of early photography in Essonne. The departmental archives invite you to a vibrant cyanotype workshop for Heritage Days 2026.

Heritage Days 2026 at the François Le Comte ice rink, listed as a remarkable example of contemporary architecture.

For Heritage Days 2026, the François Le Comte ice rink in Évry-Courcouronnes lifts the veil on its secrets. Discover this 1970s gem, designated as Remarkable Contemporary Architecture in Essonne.

Mountain & Music Festival: International lumberjack competition and free concerts in Palaiseau

The mountain comes to Palaiseau for the weekend of 26 and 27 September 2026. An international lumberjack competition, family-friendly activities, Savoy specialties, and free concerts will shape the 29th edition of the Montagne & Musique Festival.

A rally of vintage cars and motorcycles passes through Milly-la-Forêt (91) in September.

Cars, Solex, motorized bicycles and motorcycles aged over 30 years are set to gather in Milly-la-Forêt on September 6, 2026 for the 15th edition of this retro rally.

Longjumeau’s Medieval Festival 2026: knightly battles and falconry displays in September

Knights, artisans, birds of prey and riders descend on the Bois des Templiers on September 13, 2026. The Longjumeau Medieval Fair returns to Essonne for its 17th edition, welcoming the whole family.

A plunge into the 1950s in Maisse, with vintage cars and free entertainment.

From September 11 to 13, 2026,

Heritage Days 2026: Discovering the Safran Campus and Vilgénis Castle

Safran, the group specializing in aerospace, space, defense and security, will open its Massy campus on September 19, 2026, to mark Heritage Days.

Heritage Days 2026: discover the Montauger estate and its nature reserve

For Heritage Days 2026, head to the Domaine de Montauger in Essonne to explore. Between a restored château, preserved marshes and educational trails, enjoy a free nature outing on 19 and 20 September 2026.

Mennecy Metal Fest 2026: concert times by day and by stage

Metal music makes a return to Essonne for the new and 14th Mennecy Metal Fest edition. Join us this Friday, September 4; Saturday, September 5; and Sunday, September 6, 2026 at Parc de Villeroy to feel the power and explosive riffs of Saxon, Alestorm, Ultra Vomit, Oomph!, as well as Tagada Jones, Psykup, and Houle. Here’s the full line-up and concert times!

Saint-Fiacre Festival 2026: games, medieval dances and an immersive journey into the Middle Ages

The town of La Ville-du-Bois invites you to travel back in time for Saint Fiacre, a medieval-themed celebration scheduled for Sunday, September 13, 2026.

Italian Meeting 2026: a gathering of Italian cars at the Linas Autodrome (91)

Attention Italian car enthusiasts: the Linas-Montlhéry race track is bringing back its flagship September event, the Italian Meeting. See you on September 26, 2026, to take part in this gathering brimming with Italy’s colors.