Porte de Bagnolet is a station on Paris Métro Line 3. It was opened on 2 April 1971 when the line was extended from Gambetta to Gallieni.It is named after the Porte de Bagnolet, a gate in the nineteenth century Thiers Wall of Paris on the way to the commune of Bagnolet, probably named after some Roman baths located there.An interchange with Paris tramway Line 3b opened on 15 December 2012.