1. Sightseeing Tour (2-3 hours) – this is the best way to ensure that you see all of the outdoor sites. If you are only in Paris for a day, this is what I would recommend doing. You will get a snapshot and a good feel for the city. We look a 2CV night tour when all the monuments were lit up and it was absolutely amazing. The guide took us to some hidden gems and we had an amazing time in the open top car, learning all about Paris. We saw things we would never have stumbled upon on our own. If you aren’t into the 2CV or have too many guests to do this, find another tour you can do. I like to do these on the first day to get my bearings in a city.