Fort Napoleon
This fort built on top of a hill - to protect the island - offers the most beautiful panoramic view of the islands nearby. It is now a museum, open daily, but just the 45minutes hike up there is worth it.

Le Chameau
The highest point on the island - 309 m - which is accessible by a very nice hike of less than 1hour.  

Traces des Cretes
This is another beautiful hike of about 1h 15 mins. Cross the village to arrive at Pompiere beach and then follow the marked path going up the cliff and through the rocks, all the way to the spectacular Grande Anse beach, next to the airport. Make sure to have good shoes!