1) Are there any walking tours (free or guided) of Paris and its central locations?
2) Are there tours of Christian sites and basilicas (apart of Notre Dame and Sacre Coeur?
3) I just saw some videos of double-decker tour buses (red) and the HoHo (yellow). Are they from the same company, if not, which is better and more comprehensive? I was given the link to the Open HoHo buses and they have several routes (though I am told 1 ticket covers all).
4) Is there still a ticket station at or near Pont Neuf for the evening river tours on the Seine? I remember it was utterly beautiful. We took the cruise without dinner.
Thank you very much.