In the 1840s, as revolution simmered and foreign armies loomed, Paris built a colossal ring of stone and earth - Thiers Wall.  This is more than a story of urban planning; this is the memory of a Paris that once feared both the world outside and the fire within. This is a story of invasion, revolution, war and class divide.  In this episode we are covering multiple stations all around the city Porte (deep breath) Dauphine, d'Auteuil, de Bagnolet, de Champerret, de Charenton, de Choisy, de Clichy, de Clignancourt, de la Chapelle, de la Villette, de Montreuil, de Pantin, de Saint-Cloud, de Saint-Ouen, de Vanves, de Versailles, de Vincennes, des Lilas, d'Italie, d'Ivry, Dorée, d'Orléans, Maillot, Saint-Denis de Paris  Sources:  The Fabric of Paris - The Walls   The Fabric of Paris - The Peripherique  Snippets of Paris - Walls   One Day More in Paris - Fortifications  Everything Explained - Theirs Wall   Philip Augustus vs. the Kings of England: A Medieval Power Struggle  June Rebellion: The Uprising that Inspired Les Misérables  Paris 1871: The Commune and the Crisis of the French Republic  Strikes of Journeymen and Workers - Encyclopedia.com  Why Did the Vikings Invade Britain? | History Hit