The Valley of the Queens is a vast necropolis near the Valley of the Kings concealing some of Egypt's most miraculous tombs and powerful women; now, investigators use cutting-edge tech to explore lost tunnels and uncover the enigmatic secrets behind these ancient pharaohs.

The ancient city of Persepolis was once the greatest and richest city on Earth. Using forensic analysis, experts discover how the Persians rose to power.

Experts use innovative geophysical analysis to solve the mysteries of the towering Mount Nemrut in Turkey as they try to uncover the reason for its destruction.

Experts use drone technology to explore the tunnels hidden below an Egyptian pyramid for the very first time. Plus, forensics uncover a pharaoh's secrets.

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.