The Pôle métropolitain Loire-Bretagne, a metropolitan partnership area that is the result of a multilateral cooperation between Nantes, Rennes, Angers, Brest, and Saint-Nazaire, is clear in its goal: to work together to launch the Grand Ouest region. As the region’s demographic and economic driving forces, these five urban centres have been working to strengthen ties in the fields of economic development, transportation infrastructure, the promotion of sustainable development, and innovation