When you hear the phrase 10 sunken cities, the mythic Atlantis probably pops into mind first. Plato painted it as a glittering realm of riches, lush gardens, and towering temples that the gods themselves adored—until Zeus, fed up with the Atlanteans’ hubris, let Poseidon swallow it whole. While Atlantis remains a tantalizing legend, the seas hide a host of genuine, forgotten metropolises that have slipped beneath the waves. Below, we plunge into ten real underwater towns, each with its own tale of glory, disaster, and lingering mystery.
10 Sunken Cities You’ll Want to Explore
10 Dunwich
In the 11th century, Dunwich ranked among England’s most bustling towns. Yet relentless storms in the 13th and 14th centuries gnawed away at the coastline, eventually consigning the settlement to the sea. Year after year, fierce gales battered the shore, prompting locals to dig defensive ditches in a desperate bid to keep the ocean at bay. Their efforts proved futile as the sea inexorably claimed the town.
Archaeological dives have uncovered the foundations of four churches, a toll house, countless dwellings, and even a ship that later ran aground atop the ruins. Contemporary visitors can view a detailed 3‑D reconstruction in the nearby museum. Diving the site, however, is a challenge: the water is pitch‑black, visibility is minimal, and photography is nearly impossible. Still, intrepid divers have painstakingly mapped the seabed by touch, and research continues to reveal new facets of this drowned community.
9 Baiae
Located roughly 16 kilometres west of Naples, the partially submerged Roman resort of Baiae earned its name from Baios, the helmsman who steered Ulysses’s vessel. The town boasted a temperate climate, luxuriant vegetation, and famed hot springs—essentially an ancient paradise. Its landscape was dotted with opulent villas, grand public structures, and the kind of lavish baths the Romans adored.
Historical accounts describe Baiae as a hedonistic haven; poet Sextus Propertius called it a “den of licentiousness and vice.” It also played a political role: Gaius Calpurnius Piso, who plotted against Emperor Nero, called Baiae home. When Nero uncovered the conspiracy, he ordered Piso’s suicide. Divers have since recovered Piso’s villa and another residence believed to belong to the emperor himself.
The city’s wealth attracted countless treasures, many of which likely remain concealed beneath the water. Volcanic activity in the Gulf of Naples is thought to have caused part of Baiae to sink, preserving sections of the city for centuries. Since 1941, archaeologists have surveyed the clear waters, documenting remarkably intact mosaics, roads, walls, and statues of Ulysses and Baios that stand upright as if placed there yesterday.
8 Heracleion
The Egyptian port of Heracleion vanished beneath the Mediterranean more than a millennium ago. Once considered a myth, the city was finally uncovered in 1999 by French marine archaeologist Franck Goddio. Legends claim that Helen of Troy and Paris once set foot there.
The ongoing excavation has yielded colossal statues up to five metres tall, as well as a trove of artifacts: gold coins, sarcophagi, and stone slabs inscribed in both Greek and Egyptian scripts. Hundreds of shipwrecks have also been identified, underscoring Heracleion’s importance as a bustling trade hub.
At the heart of the submerged metropolis stood a massive temple dedicated to Amun‑Gereb. While the city originally perched at the mouth of the Nile Delta, it now rests under roughly 46 metres of water in the Bay of Aboukir, awaiting further discovery.
7 Ravenser Odd
Ravenser Odd was a medieval pirate settlement perched on the Yorkshire coast. As the first viable landing spot for Scandinavian vessels, its residents—mostly thieves, vagabonds, and outright pirates—would row out to incoming ships and “persuade” them to dock.
The town enjoyed a remarkable degree of autonomy: it boasted its own mayor, court, prisons, and even gallows. Residents were exempt from taxes and earned revenue by levying fees on any ship they successfully “persuaded” to come ashore.
Eventually, relentless tides and storm surges eroded the settlement. Walls crumbled into the mud, and the churchyard surrendered its graves to the sea. In January 1362, a ferocious storm—dubbed the Great Drowning—finally submerged Ravenser Odd, erasing it from the map.
6 Kekova
On the Turkish island of Kekova, a bustling town met its watery fate after a second‑century AD earthquake. Though historical records are sparse, the site appears to have been a significant Byzantine hub. Today, visitors can glimpse the ruins beneath crystal‑clear Mediterranean waters, while local boat operators offer tours of the submerged architecture.
Protected since 1990, the area welcomes tourists who can admire half‑sunken structures, including stone staircases that plunge into the sea. However, snorkeling is prohibited to preserve the delicate site, ensuring the ruins remain undisturbed for future generations.
5 Atlit Yam
Located just a kilometre off Israel’s Mediterranean coast, Atlit Yam is astonishingly well‑preserved. Human skeletons lie untouched within their graves, and a stone circle still stands intact. This site ranks among the earliest known sunken cities, featuring sizable houses with stone floors, fireplaces, and even wells.
Buried for roughly 9,000 years, the settlement resurfaced when quarrying activities exposed its remains in 1984. Marine archaeologist Ehud Galili recognized the significance of the find and initiated preservation efforts. Because exposure to air threatens decay, artifacts are only removed when they risk destruction, and researchers patiently wait for shifting sands to reveal new sections.
The site also houses a smaller stone circle reminiscent of Stonehenge, and analysis of human remains revealed evidence of tuberculosis—pushing the disease’s known history back 3,000 years.
4 Shicheng
Shicheng, often dubbed “Lion City,” lay beneath China’s waters after the Xin’an Dam was completed in 1959. The dam’s creation forced the relocation of roughly 300,000 residents, leaving the 600‑year‑old town to sink beneath the surface.
Untouched until a 2001 government survey, divers later uncovered remarkably preserved statues of lions, phoenixes, dragons, and other mythical creatures, alongside 16th‑century buildings. The cold, fresh water has kept wooden staircases from rotting, preserving the city’s architecture in astonishing condition.
Today, divers can explore the ruins at depths of up to 40 metres, offering a rare glimpse into a submerged Chinese metropolis that remains largely intact.
3 Neapolis
In 2017, archaeologists uncovered Neapolis off the Tunisian coast, a city drowned by a massive tsunami 1,700 years earlier. The site reveals streets, monuments, and hundreds of containers once used to produce garum, the ancient Roman fish sauce that pre‑dated ketchup by millennia.
Neapolis served as a major industrial centre for garum production, covering roughly 50 acres before the July AD 365 tsunami—also responsible for the destruction of Alexandria—sank it beneath the sea. While treasure hunters have yet to locate any gold, ongoing excavations continue to reveal new insights into Roman culinary practices.
2 Cambay
In December 2000, researchers announced a colossal submerged metropolis in India’s Gulf of Cambay (also known as the Gulf of Khambhat). Situated 37 metres beneath the water, the site spans roughly eight kilometres long and 3.2 kilometres wide, with an estimated age exceeding 9,000 years.
The discovery emerged during a pollution‑monitoring survey, revealing stone walls, sculptures, and human remains. However, subsequent debates have questioned both the artifacts’ age and whether the stone structures are genuinely anthropogenic. If validated, the find would pre‑date the Indus Valley Civilization by about 4,000 years.
Scientists speculate that rising sea levels at the end of the last ice age may have submerged the city, prompting curiosity about how many other ancient settlements lie hidden beneath today’s oceans.
1 Olous
Olous rests in shallow, sapphire‑blue waters off northern Crete. Flourishing during the first millennium BC, the port town amassed enough wealth to mint its own currency. Legend calls it the “city of fountains,” with locals allegedly digging a hundred wells—99 filled with water, the 100th rumored to conceal the town’s entire treasure.
The exact cause of Olous’s demise remains uncertain; possibilities include a volcanic eruption or gradual erosion. Today, snorkelers can explore the submerged ruins, though the site remains an active archaeological excavation, meaning nothing may be removed unless it’s in immediate danger.
Should you ever discover that elusive 100th fountain, you’d join the ranks of legend‑making treasure hunters—though the odds of finding it are slim.