Spend a few hours in the nature-filled surroundings of Conservatoire Botanique National de Mascarin. Admire the wide range of plants, see if you can spot some wildlife or simply kick back on the grass.
To visit this showcase of plants, head to Saint-Leu. You'll find lots of other things to see in this area, including Plage de L'Hermitage, Plage de la Saline les Bains, and Garden of Eden.