For decades, a sealed basement room sat untouched beneath an unremarkable building, its existence known to only a few and its contents to no one. When it was finally opened, investigators stepped into ...

Archaeologists have unearthed a hidden ancient palace under Rome that was likely home to the Popes between the ninth and thirteenth centuries AD before the Vatican seat was established. In preparation ...

Some of the ancient buildings, located along China’s mountaintop rivers, dated back to as far as 2800 B.C.E., with others were remnants of the country’s dynasties.

A well-kept secret of the Acropolis is a cave hiding an ancient Asclepius temple with a spring of holy water, as later Christians believed.

Explorers in China have uncovered a giant sinkhole in Guangxi province, revealing an ancient world hidden beneath the earth's ...

Tourists raise their arms at the Great Basement in the Cuicuilco Archaeological Zone during a tour organized by the National Institute of Anthropology and History in Mexico City on Oct. 5. The ...