Parc du Sempin: the future green space crossing Seine-Saint-Denis and Seine-et-Marne

Published by Margot de Sortiraparis · Photos by Margot de Sortiraparis · Updated on May 24, 2025 at 09:48 a.m.
Between the communes of Chelles and Montfermeil, right on the border between two departments of the Paris region, Parc du Sempin promises to be a major green space project.

On one side, Seine-Saint-Denis in Montfermeil, on the other, Seine-et-Marne in Chelles. On the border between the two departments in the east of the Paris region, Parc du Sempin is scheduled to open in 2025 (originally planned for 2024).

The park is being built on the Sempin quarry: for the occasion, the site has undergone a complete transformation, covering more than 23 hectares of land. Ordinarily inaccessible to walkers, the area was designed to become the Parc du Sempin, a landscaped park with a variety of natural areas. An orchard garden, recreational meadows, a clearing, wetlands and walking areas will be integrated into Parc du Sempin.

Did you know? Soil excavated by the tunnel boring machine on line 16 of the Grand Paris Express metro will be used to create the park.

Located just a stone's throw from the Moulin de Montfermeil and very close to the Jean-Pierre Jousseaume park, we strongly recommend that you stop by during your visit to the future Sempin park!

Le moulin de Montfermeil - nos photos - 0CA95797 E376 4B75 97B1 4969A3358226Le moulin de Montfermeil - nos photos - 0CA95797 E376 4B75 97B1 4969A3358226Le moulin de Montfermeil - nos photos - 0CA95797 E376 4B75 97B1 4969A3358226Le moulin de Montfermeil - nos photos - 0CA95797 E376 4B75 97B1 4969A3358226 Here is the last windmill in Seine-Saint-Denis... and it's open to visitors!
In Montfermeil, northwest of the capital, the city holds an incredible treasure: the Semplin Mill. Built under Louis XIV, it remains standing today—resisting storms and revolutions, with its stones still original. Reopening is scheduled for early April 2026! [Read more]

Practical information

Location

parc sempin
77500 Chelles

Route planner

Official website
www.agglo-pvm.fr

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