Above the beach at Dexa is the Cave of Nymphs also known as Marmarospilia. This is the cave where Odysseus is supposed to have hidden his treasure on his return from Troy. What treasures have been found are more of an archaeological nature and can be found in the museum in Vathy.
The cave is, well it's a cave, and has a hole in the roof and a clump of cypress at the entrance. What atmosphere it once may have had have been lost in a blaze of tacky coloured lights. Some say this is not even the original cave anyway, the real one being inadvertently demolished in a nearby quarry some years ago. The route to the cave is well signposted from the road.