You can go easaly wonder around and discover remarkable natural spaces:

The Camargue, situated in the delta of the Rhône River offers a fauna and an exceptional flora. The sansouire, the ponds and the swamps dominate the lanscape.
The Massif des Alpilles is the geologic continuation of the Alpes, it is why it takes its name. This limestone chain conceals numerous archeological sites and classified constructions.
Crau, a semi desertic plateau, is the former bed of the Durance River, a desert of round pebbles very dry and grazed by crowds in transhumances since the Roman time.
Arles, place of Celtic environment, then Greek, becomes Roman by Caesar's will in 46 before JC. The district of Arles extends over 758 square kilometres, it is widest in France.