An oasis of calm amid the busy streets, La Savane is a lovely place to take a breather. Pull up a bench and watch fellow parkgoers wander around the grounds.
You'll have no end of sightseeing choices when staying in Fort-de-France. La Savane Park is a good place to kick off here, but there are lots of other worthwhile spots to consider. Pointe du Bout Beach, Anse Mitan, and Marina of L'Etang Z'Abricots are near the recreation and green space and and will cap off your day nicely.