Beginning in 1906 and 1908, the station was served by the Metro Line 4 (which crosses Paris from north to south) and the terminus of Metro Line 5 (which ran to Étoile through Place d'Italie. In 1942, Line 5 was extended towards the northern suburbs of Pantin and Bobigny, while its south terminus was set to Place d'Italie. Metro Line 2 (station La Chapelle) is linked to the Gare du Nord via a tunnel. One enters the Métro station; instead of climbing the stairs that lead to the elevated Métro line (not all of Line 2 is elevated), one descends several flights of stairs, before traversing a long, arched circular hallway to enter the station.