Pavlopetri, a small islet in the Peloponnese, is the oldest ancient Greek city that has ever been discovered underwater.

Imagine diving into the deep blue... and finding a whole city sitting silently at the bottom of the ocean. Sounds like ...

Ancient shipwreck treasures, a Roman battering ram from the Punic Wars, and remains of an underwater city headline Fernbank ...

More than two decades after it was first discovered, a mysterious ‘underwater city’ off the coast of Cuba is back in the ...

Atlantic City, New Jersey — often heralded as the "Las Vegas of the East Coast" — could soon more closely resemble the mythical underwater city of Atlantis, according to a new study reported on by the ...

The City of Miami Beach is marking a historic milestone with the first-ever deployment of the REEFLINE, a pioneering ...

Remember when the internet cried actual tears for an anglerfish earlier this year? Now, TikTok has a new deep-sea obsession. Brought to light by creator and wildlife biologist Josh Allyn, TikTok has ...

For historians, an underwater city is literally buried treasure. An artifact is preserved exactly as it once was, but it just ...

Editor’s Note: This CNN Travel series may have adjacent ads by the country it highlights. CNN retains full editorial control over subject matter, reporting and frequency of the articles and videos, in ...