Cave
Diros Caves
These extraordinary flooded caves, inhabited since Neolithic times, lie 11km south of Areopoli and are signposted near the village of Pyrgos Dirou. The entrance is on the beach. Guides basically only speak Greek, so if your group doesn't you'll be treated to a half-hour's silent, eerie glide by boat through the cave's many passages, giving you time to admire the stalagmites and stalactites, many of the latter as fine as gossamer threads. You tackle the remaining 300m on foot.