Le Mesnil-Saint-Denis Twinning Committee Flea Market
Edition 2026 Car Boot Sale Flea Market Outdoor

Le Mesnil-Saint-Denis Twinning Committee Flea Market

The annual flea market in the Mesnil-Saint-Denis château-town hall courtyard

Le Mesnil-Saint-Denis — Yvelines (78) 150 exhibitors
Dates 24 May 2026
Location Le Mesnil-Saint-Denis (78)
Admission Free
Exhibitors 150 exhibitors

About Twinning Committee Flea Market

The Le Mesnil-Saint-Denis Twinning Committee Flea Market is an annual spring event held in an exceptional setting: the inner courtyard of the château-town hall of this commune in the Haute Vallée de Chevreuse Regional Natural Park. Between 51 and 250 exhibitors offer their finds to support the twinning committee's activities, in a unique heritage atmosphere.

A flea market in a château-town hall, a heritage rarity

Some flea markets stand out for their exceptional setting, but few can claim to take over the inner courtyard of a genuine château transformed into a town hall. That is the privilege of the one organised each spring by Le Mesnil-Saint-Denis Twinning Committee. Exhibitors set up their stalls within the historic grounds of the municipal building.

A late May Sunday in a historic setting

The event is held on Sunday 24 May 2026, from 9 AM to 5 PM, with setup from 7 AM. This generous timeframe allows visitors to come at their convenience.

The Twinning Committee, association with European values

The Le Mesnil-Saint-Denis Twinning Committee is an association maintaining links between the commune and its twin village(s), generally in Europe. Twinning committees play a valuable role in French community life.

51 to 250 exhibitors

The announced exhibitor count, between 51 and 250, testifies to an event that can accommodate a wide variety of participants. Stands cost €20.

Le Mesnil-Saint-Denis, heritage commune

Le Mesnil-Saint-Denis is a commune of about 7,000 residents at the heart of the Haute Vallée de Chevreuse Regional Natural Park.

Twinning Committee Flea Market — edition 2026

The Twinning Committee Flea Market will be held on Sunday 24 May 2026 in the inner courtyard of Le Mesnil-Saint-Denis château-town hall, from 9 AM to 5 PM. Between 51 and 250 exhibitors for this spring event in a unique heritage setting. Free admission.

Prices Twinning Committee Flea Market 2026

Free admission. Exhibitor stand: €20 (online registration).

Practical information — Twinning Committee Flea Market

Practical Information

  • Location: Inner courtyard of château-town hall, 1 rue Henri Husson, Le Mesnil-Saint-Denis (78320)
  • 2026 date: Sunday 24 May 2026
  • Hours: 9 AM - 5 PM (setup from 7 AM)
  • Exhibitors: 51 to 250
  • Stand: €20 (online registration)
  • Admission: Free
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Where does it take place Twinning Committee Flea Market

Cour intérieure du château-mairie

1 rue Henri Husson, 78320 Le Mesnil-Saint-Denis

Twinning Committee Flea Market in brief

Car Boot Sale Flea Market Outdoor Annual Private Sellers Only Free Admission Family-Friendly Yvelines Annuel (mai)