The pre-Columbian city of El Tajin is thought to have been built by an indigenous people whose culture predated the Aztecs.

Houchengzui Stone City is between 4,300 and 4,500 years old with ruins stretching across roughly 15 million square feet, according to a Dec. 28 news release from the Inner Mongolia Autonomous ...

The Old City on the western side of the River Tigris was the heart and soul of Mosul. Now, it lies in ruins. The streets were largely deserted apart from a handful of people and bulldozers.

One sector is cordoned off to itself by walls, ditches, and, perhaps, a moat—built ... not the lost city, but a different lost city. In 1964, adventurer Gene Savoy identified ruins and proved ...