The first line in Switzerland, the extension of the French Strasbourg–Basel Railway (French: Chemin de fer de Strasbourg à Bâle) from Mulhouse to Basel, reached a temporary station outside Basel's walls on 15 June 1844 and the permanent station on 11 December 1845. (The Chemins de fer de l'Est took over the company in 1854.) The Grand Duchy of Baden State Railway's Rhine Valley Line reached the original Basel Baden railway station in 1855. Despite constant discussion, it took some time before these lines extended into Switzerland.[1] The first internal Swiss line, the 16 km long Swiss Northern Railway (German: Schweizerische Nordbahn, SNB) opened from Zürich to Baden in 1847.