Arkadia prefecture has two very remarkable caves. Some of those are:
- Leonidio: DIONYSUS (SINTZAS) CAVE, with stalactites and stalagmites. Vases and bones dating from various periods were uncovered in the cave.
- Paralia Tyrou – Sapounakaiikon: THE CAVE OF THE LOVERS, located on the beach of Tigani. It can be reached by boat.