Porte Maillot is a station on Paris Métro Line 1 and as Neuilly–Porte Maillot on the RER C and RER E. The station replaces another station of the same name, the original terminus of Line 1, which was demolished and moved in 1936.
The name derives from the Porte Maillot, a former gate to the Bois de Boulogne, whose name derives perhaps from maille, or croquet. The present day Porte Maillot is in the centre of a roundabout close to the modern Palais des congrès de Paris which the station serves. The centre of the roundabout is a small park, providing a midpoint on the long view between the arches of La Defense and the Arc de Triomphe.
Wikipedia https://en.wikipedia.org/wiki/Porte_Maillot_station
Coordinates 48°52'40.576" N 2°16'55.041" E