The town was fought over during both the First and Second World Wars, suffering significant damage and being occupied several times by both sides. The 1918 Battle of Amiens was the opening phase of the Hundred Days Offensive which led directly to the Armistice with Germany that ended the war. It was heavily bombed by the Royal Air Force during the Second World War. The city was rebuilt according to Pierre Dufau's plans with a focus on widening the streets to ease traffic congestion. These newer structures were primarily built of brick, concrete and white stone with slate roofs. The architect Auguste Perret designed the Gare d'Amiens train station and nearby Tour Perret.