I would NOT recommend this particular tour!! We never found the correct location to pick up our tickets. The location that came up was Hotel Sully when we Googled the address. Upon arriving at Hotel Sully, there were no signs, all doors were locked and the two people in the security office had no idea what we were talking about. So we headed to Ile d'la Cite hoping to find another ticket office. We walked all over the entire island and never found such a building. As a result, we re-purchased Saint Chapelle tickets which was absolutely amazing! We did not see the Conciergerie, we were not able to go into Notre Dame or take the inside tour of the l'Arc de Triomphe. We were highly upset and disappointed that these major location were taken off our itinerary even though we had already paid for these tickets that we were ultimately not able to obtain.