Plato's writings about the city of Atlantis sparked a curiosity for ancient underwater cities that have not been satiated to this day. Several people have tried to find the ancient city, and it has become a staple of both modern literature and films. Above it all, it is still unknown if Atlantis was a real city or a mythical one.

Real or not, the search and hope that Atlantis could be found, has led to the discovery of several other underwater cities. While some like Pavlopetri are thousands of years old and are remnants of civilizations long lost, others are merely centuries old and their discovery merely brought to an end debates about their existence.

Still, a few are relatively modern cities that have been submerged under the sea for various reasons. These underwater cities may not be full of golden streets and palaces, but they tell stories and fill important gaps in history. And sometimes, the filled-in details shock the world.