This tiny sunken city has been underwater for 3,000 years, with its remnants of ancient history now deep in the ocean. Pavlopetri is a small islet off the coast of Laconia in the southern Peloponnese.

Pavlopetri is thought to be some 5,000 years old, but it wasn’t discovered until the 20th Century, and experts are still uncovering its secrets and treasures. The Bronze Age town was first ...