I was able to spend about a day and a half in Paris. I timed my visit to the Eiffel Tower just to be up there are dusk and watch the city light up. It was quite impressive and the tower is quite nice all lit up.
The following day, I hopped on a hop on hop off bus for a tour of the city. It took me to all the highlights. After that I had some time to kill, so I just relaxed in a park, until it was time for me to catch my shuttle to the airport.