The best free thing to do in any city is find a park and watch local life, but between bench-warmings in Paris, visit Pere Lachaise cemetery, one of the top 5 free things to do in Paris for student travelers
. This famous cemetery at the Phillipe Auguste or Pere Lachaise metro stop has maps onsite to help you find graves of some of the notables resting among vast Pere Lachaise's trees, such as Honoré de Balzac, Frédéric Chopin, Jim Morrison of '60's band the Doors, Marcel Proust and Oscar Wilde. Allot plenty of time to wander Pere Lachaise (hours follow).
I visited Pere Lachaise on a sunny spring Sunday morning in 2006 with a group of terrific Texas students on an EF Tours educational trip called "Traveling Through History," which is certainly what a walk through Pere Lachaise is. Our group got the rundown on navigating the cemetery's streets from our EF tour director, and we were off to roam among the inspiring and usually thought-provoking tombstones dating from the 1600's.