For our final day in Paris we decided to join an hour boat tour along the Seine River. Just to be safe, I also purchased our ticket online in advance at travelguide.com. Our ticket cost 10 euros which I thought was surprisingly inexpensive. You can also purchase the ticket right on the spot in their ticketing area.
This particular tour is located right across the Eiffel Tower down to the Pont d’Iéna “Jena Bridge”. We took the very first schedule of the day which was from 10AM. I highly suggest to do the same as the line can get really crowded in the middle of the day and it would be hard to find the perfect spot while on the boat.