first right, you will see the sign Tour Initiale Voie Pompier Accès taxi. Once there, you must identify yourself by using the calling device to gain access to the Tour’s front entrance. The security guard will open the barrier. Directions from Boulogne through the Seine River bank (bank’s right side) to La Défense 11

: http://www.rte-international.com/Public/Files/__Uploads/files/acces_tour_initiale_voiture_en.pdf