Explore details about location Impasse Frédéric Passy. Impasse Frédéric Passy is a location situated within the La Roche-sur-Yon alongside other areas such as Boulevard Gaston Defferre, Rue d'Elbée, Impasse Las Casas. Additionally, some smaller parts of Impasse Frédéric Passy include specific areas like Boulevard Lavoisier adding to the diversity of its landscape.