The railway from Paris to Lille is an important French 251-kilometre long railway line, that connects Paris to the northern French city Lille. Branch lines offer connections to Belgium and Great Britain. As one of the first railway lines in France, it was opened on 20 June 1846. The opening of the LGV Nord high speed line from Paris to Lille in 1993 has decreased its importance for passenger traffic. Route The Paris–Lille railway begins at the Gare du Nord in Paris, running north for 6 km until Saint-Denis. From here, it climbs in northeastern direction at a constant 5 mm/km incline. Near Marly-la-Ville, it turns north and then northwest, and descends towards the river Oise. At Creil, the Oise is crossed. The line to Saint-Quentin and Brussels branches off at Creil. The line leaves the Oise valley and continues north to the river Somme at Longueau near Amiens. Here the Longueau–Boulogne railway to the Gare d'Amiens and Boulogne-sur-Mer branches off to the west, and a line to Laon to the east. The line to Lille continues in northeastern direction, following the valley of the Somme until Corbie, and then the river Ancre until Miraumont, where the line turns north until it reaches Arras. From Arras it follows the river Scarpe in eastern direction until Douai, where it turns northwest. After Ostricourt it turns north again, entering the agglomeration of Lille. After a total length of 251 km, it reaches its terminus Gare de Lille-Flandres. Main stations The main stations on the Paris–Lille railway are: Gare du Nord (Paris) Gare de Creil Gare de Longueau Gare d'Arras Gare de Douai Gare de Lille-Flandres History The idea of linking France to Belgium and Great Britain was studied by the French Government as early as 1833. By November 1842, the northern French cities Lille and Valenciennes were already connected to the Belgian railway network. In July 1844 a law was passed that determined the route of the new railway from Paris to Lille. Exploitation of the line from Paris to Lille and several branch lines was granted to the Compagnie des chemins de fer du Nord. Owners of the CF du Nord were Hottinger, Laffitte, Blount and Baron de Rothschild as president. The railway line as well as the Parisian station was inaugurated in June 1846. The line originally passed through the Oise valley, along Saint-Ouen-l'Aumône and Persan. This way a steep