Ice age triggered by volcanic ash from three massive eruptions that lowered global temperatures may have caused the Roman ...

Its once-busy port has silted up, and the Adriatic coast receded; many of its majestic Roman ... the ancient walls remain, but the gate was severely damaged in 1870 during the Capture of Rome ...

On a riverside in eastern Austria sat a mysterious set of ruins. Some believed it to be an abandoned, run-down castle. Others thought it could be the remnants of a unique, ancient Roman structure.