http://weburbanist.com/2013/04/22/submerged-cities-7-underwater-wonders-of-the-world/
Sucked into the sea by earthquakes or intentionally flooded to create dams, ancient and contemporary cities lurk just beneath the surface in bodies of water all over the world. Some, like Alexandria in Egypt, represent some of the most significant archaeological findings in recent history; others are more mysterious in origin. The eerie remains of these 7 submerged cities will reveal their secrets only to those who can swim through their underwater streets in scuba suits.
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This is an excerpt. Follow the link for the full story. There are some real good pictures.
