Gare Montparnasse
The Line 10 station was opened on 30 December 1923 as part of the first section of the "ligne circulaire intérieure" (inner circular line) from Invalides to Croix-Rouge (a station east of Sèvres–Babylone, which was closed during World War II). This line was planned by Fulgence Bienvenüe to connect the city's six main railway stations, with Duroc presumably intended to serve the Gare Montparnasse, although it is 500 metres away.