Brittany's dramatic 750-mile coastline traces a rugged hem against the chilly Atlantic. Attractions such as St-Malo's 1689 Fort National, the prehistoric ruins and striking beauty of Gavrinish Island and Brest's Oceanopolis aquarium cling to the rocky shoreline of France's most northwestern province. Nantes, Rennes and Brest are the largest cities. Rennes is just two hours from Paris by TGV. Breton and Gallo, the ancient languages of this Celtic province, are still spoken in pockets throughout the area.