The History Channel examines the remains of ancient cities, preserved for thousands of years, and poses the theory that they could be the lost city of Atlantis.
Atlantis seems to be a topic growing in popularity of late, with a site in Spain proposed as the latest site of the great civilization.
I am, as of yet, undecided about how I feel about any of the proposed Atlantis sites. But I am fascinated with all of the things they have found on their search to find the cities.
If nothing else, it just goes to show that early man was a lot smarter than the mainstream would like us to believe.