Explore details about location Allée du Portillon. Allée du Portillon is a location situated within the Saint-Herblain alongside other areas such as Chemin de la Vallée, Rue Christophe Colomb, Allée Prosper Mérimée. Additionally, some smaller parts of Allée du Portillon include specific areas like Avenue Gabriel Voisin, Rue Albert Camus, Allée du Château de la Patissière adding to the diversity of its landscape.