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The 2025 edition of the Great Whitsun Flea Market of Boissy-Mauvoisin was held on Sunday 8 June 2025, with nearly 275 private exhibitors around the church square and Rue des Tilleuls. Organised by APE La Clé des Champs, it confirmed its status as the great Whitsun village festival of the rural Mantois.
On Sunday 8 June 2025, Boissy-Mauvoisin hosted its Great Whitsun Flea Market in a sunny atmosphere. Around 275 private exhibitors set up from dawn around the church square. Visitors, who came in great numbers from the Mantois and French Vexin, could browse throughout the day before enjoying the refreshments offered by the volunteers.
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Place de l'Église
Place de l'Église, 1 rue des Tilleuls, 78200 Boissy-Mauvoisin