When Pompeii was destroyed by an apocalyptic volcano, another town was destroyed, too - Herculaneum. It is one of history's most perfectly preserved towns.

The Roman Empire built Hadrian's Wall to guard its frontiers; new discoveries reveal who the Romans were trying to keep out with this 72-mile-long megastructure.

The Nazca Lines are mysterious, alien-looking symbols carved into a remote desert more than a thousand years ago, and new discoveries might finally reveal what these strange images…

The underground bunker of Adolf Hitler is home to some of the greatest secrets of the Nazi regime. Experts use cutting-edge technology to uncover new evidence.

The Leaning Tower of Pisa is one of the world's most iconic buildings, and it's also the site of an 800-year-old mystery; using cutting-edge tech, experts investigate the…