Overview: The Pantheon is a 2,000-year-old temple with a dark secret. Today, using cutting-edge archaeological methods and brand-new evidence, experts look beneath the streets of Rome to find out why it was built and how it survived so long.
Overview: Experts investigate myths of a secret portal to hell in Hierapolis.
Overview: Experts travel inside ancient mounds to investigate the legend of Midas.
Overview: Scientists use pioneering technology to discover the foundations of Venice.
Overview: The Tower of London is a centuries-old castle shrouded in a grisly past.
Overview: A prehistoric structure could reveal mysteries to the Bronze Age.
Overview: Experts explore sunken ruins and reveal one of the first great empires.
Overview: Experts decode an Egyptian pyramid constructed as if it floats on water.
Overview: Deep in the Iraqi desert, the world's only ziggurat towers over the remains of the first civilization ever known in human history; armed with pioneering satellite imagery, experts investigate the dark mysteries behind this massive, ancient structure.