The decapitated statues of Mount Nemrut in southeastern Turkey and their eventual destruction have mystified experts for centuries; now, archaeologists decode cryptic inscriptions and use innovative geophysical analysis to reveal the mystery behind this ancient megastructure. 

The downfall of the powerful Maya city of Palenque in southern Mexico continues to mystify archaeologists today; now, investigators gain rare access to explore lost tombs to reveal the truth behind this legendary city and the mystery behind its enigmatic queens.