The UnXplained

Explore the world’s most fascinating, strange and inexplicable mysteries. Each episode features compelling contributions from scientists, historians, witnesses and experiencers—each seeking to shed light on how the seemingly impossible actually can happen.

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Created By
Status	Returning Series
Original Name	The UnXplained
First Air Date	July 19, 2019
Last Air Date	January 16, 2026
Seasons	8
Episodes	107
Episode Runtime	43min
Language	English
Original Language	English
Production Countries	United States of America
Production Companies	Prometheus Entertainment
Networks	History

S08E01

Impossible Ancient Structures

All over the world stand ancient structures so massive, precise, and baffling that they seem impossible for not just their time, but ours as well. From colossal walls and giant stone tombs to temples carved from solid rock, how did ancient civilizations achieve feats of engineering that still defy modern understanding?

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