Experts explore Hadrian's Villa, the largest Roman palace ever constructed.

Nearly a decade after the ancient site of Nimrud was destroyed by terrorists, experts return to salvage the wreckage; archaeologists piece together the remaining ruins to reveal the origins and brutal decline of a lost empire.

The Red Pyramid at Dahshur is a revolutionary megastructure and the first true pyramid ever constructed in ancient Egypt; experts investigate to reveal the pharaoh who built it and the mystery behind its trailblazing design.

Archaeologists explore Abusir and the secrets of Egypt's Sun Cult pharaohs.

Experts explore the origins of kings in the lost city of Kish, Iraq.

Along with Pompeii, the devastating eruption of Mount Vesuvius left another mysterious Roman settlement buried beneath its ashes; experts reveal new evidence of an ancient civilization and history's most infamous disaster.