Paris was created some 2000 years ago and began at the Cite Island (Ile de la Cite). With emphasis on the history and art of the Capital, this tour includes a drive through the oldest part :
First, you will admire the geometric design of Vendome Square and the fantasy of the old Opera House. Then, the Marais district and its < hotels >, private townhouses of the nobility of the 17th and 18th centuries. Your bus will cross the Latin Quarter with its old university (the Sorbonne), the Luxembourg Gardens, Saint Germain des Pres with its romanesque church and its famous cafes, and will drop you near the Orsay Museum to take the boat for a short transfer to approach the Cite Island (forbidden to buses). There, you will listen to a guided visit of the interior of Notre-Dame Cathedral*. By boat again (Batobus), you will come back at around 1:15pm to the office near the Louvre Museum and the Tuileries Gardens.

*In case of mass, the guide will comment for you the cathedral and its three portals from outside but will not be allowed to speak inside.