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Haute vallée de la Bièvre

Valley / glen

The Upper Bièvre Valley is a territory made up of eleven municipalities within the departments of Yvelines and Essonne. This site was classified on 07/07/2000 along the river Bièvre, which has its source in Guyancourt and flows into the Seine in Paris.

This natural area is rich in heritage and has the advantage of being close to Versailles and Paris. The municipalities crossed by the Upper Bièvre Valley are : Guyancourt, Buc, Les Loges-en-Josas, Jouy-en-Josas, Vélizy-Villacoublay, Bièvres, Saclay, Vauhallan, Igny, Massy and Verrières-le-Buisson.

General information

Walkers/hikersMountain bikers


All year round.


Free access.


Unguided individual tours available permanently
Unguided group tours available permanently


  • Play area
  • Themed path
  • Free car park
  • Coach access

Contact details

Haute vallée de la Bièvre
78350 Les Loges-en-Josas