We had the same bad experience as Jeff in the previous post. It was awful. A complete waste of time and money. On ours though, the driver picked up others at 3 different hotels after picking us up, and returned to the same 3 hotels before taking us back to our hotel, so that really ate up our time. He drove at normal driving speed past everything, never even attempted to slow down, We were stuck in traffic, he was in a very bad mood and didn't speak much. It was bad. I think it was a ParisVision tour. I've lived in Paris twice and we return every summer, so we just did the tour for what we thought would be fun. It wasn't. Paris does have a wonderful "Hop on, Hop off" bus which is much more worthwhile. I think they stop around 9 pm. Another alternative to the more formal tour would be a boat down the Seine after dark, the one I like best picks you up right by Notre Dame, sorry, can't remember the name.