[email protected] -- ( 33) 1-4455-6000 -- Provide your printed complimentary voucher at the l'Opentour Office at 13 rue Auber (nearest metro station : Opera or Auber) or at the bus driver in exchange for your boarding pass. If you would like to schedule additional Gray Line Paris tours, the Gray Line/Cityrama terminal is located two blocks from the Louvre! (2 Rue des Pyramides, Paris 75001)
