Pavlopetri — Submerged Ancient City

Pavlopetri is considered one of the oldest known submerged cities in the world, with a history spanning more than four thousand years. The remains of streets, buildings, and urban layout lie in the shallow sea between Elafonisos and the coast of the Peloponnese, making them visible even with just a mask and snorkel. Due to its exceptional archaeological value, the site is protected, and it represents one of the most significant underwater archaeological sites in Greece.