Île-de-France tramway Lines 3a and 3b are the first modern tramway in Paris proper since the 1937 closure of the previous comparable system. They are operated by the RATP and divided into two sections called T3a and T3b. The line is also known as the Tramway des Maréchaux because it follows the Boulevards of the Marshals, a series of boulevards that encircle Paris along the route of the former Thiers Wall. The boulevards are, with three exceptions, named for Napoleon's First Empire marshals; they were transformed by redevelopment works carried out during the two and a half year construction of the line, which opened on 16 December 2006 under the designation T3.
The line initially ran in its own section of these boulevards' roadway between the 15th and 13th arrondissements, allowing it to connect the Pont du Garigliano and Porte d'Ivry in an average of 26 minutes.
Wikipedia https://en.wikipedia.org/wiki/Île-de-France_tramway_Lines_3a_and_3b
Address 46 Boulevard du Général Jean Simon, Paris 75013, France
Coordinates 48°49'31.497" N 2°22'50.798" E