Organized by the association Helium in partnership with the PNR of the Haute Vallée de Chevreuse, the event «Folies Lavoirs» proposes you to discover this vernacular heritage through several artistic installations and animations around 32 wash houses of Yvelines and Essonne, gathered in 4 circuits to travel. In Gif, it is the Gibeciaux wash house that is honored: discover the history of the oldest wash house slap, through a tour commented by Aurélie Erlich, national speaker.