Journées du Patrimoine 2025 in Saint-Ouen-sur-Seine (93): visits to the town's famous flea market

On the weekend of Saturday, September 20 and Sunday, September 21, 2025, the Journées du Patrimoine (Heritage Days) promise a wealth of discoveries and visits, and above all a chance to take a fresh look at the heritage of Paris and the Ile-de-France region, particularly in Saint-Ouen-sur-Seine, Seine-Saint-Denis. Discover the program!

It's the cultural and heritage event not to be missed under any circumstances at the start of each September in Paris or the Île-de-France region: this year's Journées du Patrimoine (Heritage Days) will be held from September 20 to 21, 2025, with, as usual, a program as rich as it is varied. So, this is your chance to discover the little nuggets hidden close to home, with visits to secret or insolit places , but also, to take a tour of the most unmissable of the great Parisian monuments, places of power, churches, castles... Yes, the Journées du Patrimoine (Heritage Days) are particularly promising, especially in the suburbs, with numerous tours to discover little-known heritage.

In the Seine-Saint-Denis department, in Saint-Ouen-sur-Seine, it's time to take a trip to the town's famous Puces if, much to your chagrin, you've never managed to get there. Visited by millions of tourists every year, the Puces de Saint-Ouen is Europe's largest flea market! It's also an opportunity to discover other parts of the city, including the Hôtel de Ville, and to take a stroll around this rapidly expanding commune, with its new Docks district on the banks of the Seine. Here's the program for the 42nd Journées du Patrimoine in Saint-Ouen-sur-Seine!