Paris Métro Line 8 (French: "Ligne 8 du métro de Paris") is one of the sixteen lines of the Paris Métro. It connects Balard in the southwestern part of Paris to Pointe du Lac station in the southeastern suburbs, following a parabolic route on the Rive Droite of the Seine. The last line of the original 1898 Paris Métro plan, which opened in July 1913, it was initially intended to link Porte d'Auteuil and Opéra. With 105.5 million travellers in 2017, it is the network's eighth busiest line; at 23.4 km (14.5 mi) of length, it is also the second longest Métro Line after Line 13. Along with Line 7, it serves the most stations of any line on the network, at 38. Line 8 interchanges with all but three other Métro lines (Line 2, Line 3bis and Line 7bis).