The Yvelines (78) kicks off the All Saints’ Day holidays with a program that smells of fallen leaves and old stones. For this weekend of October 17 and 18, 2026, we’ve kept ten discovery outings gathered along our strolls, from the Seine Valley to the Chevreuse Valley.
On Saturday, Mantes-la-Jolie steps back in time with the Mantes Medieval Festival, which marks the 576th Onion Fair with knights, storytelling and an artisans market, all free. The same day, the château de Dampierre-en-Yvelines launches its Autumn Colors for the entire holiday period, while WOW Safari Thoiry rekindles its Wild Lights following Pachamama. Sunday, it’s time for bargain hunters in Andrésy, where the big flea market by the Seine brings together more than 300 exhibitors.
With the kids in tow, this weekend's Monument Jeu d'Enfant also transforms the Villa Savoye à Poissy and the château de Rambouillet into playgrounds and workshop spaces. Just pack a light sweater: the weather stays dry on Saturday but cools noticeably on Sunday, according to Météo-France.
Flea markets and garage sales in Yvelines on October 17–18, 2026 - 78
The flea markets and garage sales across Yvelines (78) are betting big on Sunday, October 18, 2026, led by Andrésy’s grand brocante with more than 300 exhibitors along the Seine, a collectibles fair in Magnanville, and the Buchelay flea market. [Read more]
Thoiry Wild Lights 2026-2027: follow in the footsteps of Pachamama
Thoiry Wild Lights returns to WOW Safari Thoiry in the Yvelines for a 9th edition titled In the Footsteps of Pachamama: a nocturnal route of nearly 3 km and more than 3,000 illuminated sculptures, from October 17, 2026 to March 7, 2027. [Read more]
Mantes Medieval Festival 2026: the free Middle Ages celebration in Yvelines returns.
La Médiévale de Mantes transforms the city center of Mantes-la-Jolie, in Yvelines, into a medieval town on Saturday, October 17, 2026 for the 576th Onion Fair: knights, tales, encampments and an artisan market, all free of charge. [Read more]
Architecture Days 2026: La Ferme d'Ithe, this medieval treasure perched atop an ancient city
As part of the National Architecture Days, from October 16 to 18, 2026, set off to explore the Ferme d’Ithe in Jouars-Pontchartrain. An offbeat heritage escape in the heart of the Yvelines, where medieval ruins meet archaeological digs. [Read more]
Monument Jeu d'Enfant 2026: A family-friendly, creative weekend at the Villa Savoye in Poissy
On October 17 and 18, 2026, Villa Savoye opens its doors for a family-friendly weekend, as part of the Monument Jeu d’Enfant 2026 event! [Read more]
Halloween 2026: Dampierre Castle Celebrates Its Autumn Colors for All Saints’ Day
Dampierre-en-Yvelines Castle is celebrating Halloween with its Autumn Colors: pumpkins, mysterious cellars, vampire-drawn carriages, and Nuit des Châteaux, from October 17 to November 2, 2026, during the All Saints’ Day holidays. [Read more]
Halloween 2026 at Breteuil Castle: a festival, hands-on workshops and nocturnal investigations
From October 17 to November 1, 2026, Breteuil blends storytelling, creative workshops and a family festival. A haunted night and two murder parties keep Halloween going into the evening. [Read more]
Architecture Days 2026: the family program at Claude Debussy's birthplace house
Save the dates October 16, 17 and 18, 2026 for a host of special activities at the Claude-Debussy Birth House, marking the new edition of the National Architecture Days. [Read more]
Night of the Castles 2026: music, performances and a candlelit evening at Dampierre-en-Yvelines Castle
The Domaine de Dampierre-en-Yvelines is taking part in the new edition of the Night of the Castles on October 17 and 18, 2026. Discover the charming family-friendly program that should make this evening very special! [Read more]
Halloween 2026 at France Miniature: an on-site investigation in the park and a whirlwind tour of France in a day
For Halloween 2026, France Miniature is transforming itself to offer you a spine-tingling experience: but fear not, this experience remains family-friendly! Dash over to discover the park, transformed, from October 3 to November 1, 2026. [Read more]
This bakery-pastry shop in Yvelines sells the best mille-feuille in France.
The Duhamel bakery and patisserie in Orgeval, Yvelines, sticks to traditional, no-frills pastries. We headed to this gourmand spot to check out, in particular, the famous vanilla mille-feuille, crowned France’s best in 2026, sold year-round in-store. [Read more]
Where to dine in Yvelines? Top restaurant picks in the 78, tried and trusted
There's no shortage of good places to eat in the Yvelines. If you'd like to discover the best restaurants in the 78 department, here we go! [Read more]
Where to stay in Yvelines? Hotels, bed and breakfasts, and campsites in the 78 department.
The Yvelines, with its lush green landscapes and rich heritage, offers the ideal break just a few kilometers from Paris. Whether you're looking for a bucolic setting, a warm atmosphere or immersion in the heart of nature, there are several options available to visitors in search of escape. [Read more]
Ten offbeat parks and gardens in Yvelines, treasures to discover
What if we set off on a stroll to discover the loveliest original parks and gardens in Yvelines? From hidden, unique, historic spots to outright quirky or simply one-of-a-kind places, the 78 has no shortage of unusual gems for anyone looking to stray off the beaten path. We’re unveiling 10 parks, gardens, and green spaces to explore in the department. [Read more]
Where to have a good brunch in the Yvelines? Our top picks in the 78
Whether you live in the Yvelines or are just passing through, discover our top brunch spots in the 78. [Read more]
Where to have a good brunch in Versailles in the Yvelines? Our top picks in the 78
Looking for a good brunch in Versailles? Discover our top picks in the royal city of Yvelines, including artisan coffee shops, all-you-can-eat options, and family-friendly spots! [Read more]
What to do in Yvelines (78)? Heritage, good addresses and activities, ideas for outings
Want to get to know Paris Region better? This time, we're taking you to the Yvelines to discover its heritage, places to visit, must-do activities and the best deals of the moment. From castles to walks and good addresses, here's what's in store for you in the 78 département. [Read more]
Glorious Escape Game in Vélizy, the go-to spot for fun with friends or family in the Yvelines
Glorious Escape Game, based in Vélizy-Villacoublay (Yvelines), offers nine escape rooms: The Emperor's Legacy, Django, Asylum, Lost, The Stone of Anubis, The Haunted House, The Walking Dead, The Relics of Death, and Pirate: The Amulet of Eternal Life. [Read more]
The most beautiful villages in the Yvelines, 7 must-see nuggets
Looking for a change of scenery less than an hour from Paris? The Yvelines (78) region is brimming with charming villages full of character. From Rochefort-en-Yvelines to Montfort l'Amaury, discover 7 Yvelines nuggets combining historic heritage and bucolic surroundings, all year round. [Read more]
Before you head out, checking the transport disruptions can spare you some nasty surprises: a protest is planned this Saturday, October 17, and work continues on several lines, including Transilien’s Line N. Also be sure to check the opening hours of places before you go, as some are operating on a school-holiday schedule.
Enjoy your weekend in the Yvelines!
Dates and Opening Time
From October 17, 2026 to October 18, 2026
Recommended age
For all
