We'll be arriving at Gare du Nord next Saturday (18th) morning and plan to visit the Louvre first. What's the best way to get there? RER or on foot? Walking would enable us to see more of the city, but we don't want to use all of our time walking if it's a long way.
We plan to visit the Eiffel Tower as well. Is it best to go up in the daylight or at night? And how long should we allow for the trip to the top and back down? I know it will depend how long we spend looking at the view, but an idea of how to long to allow would be helpful.