100% loved this6 episodes4KCC
Plans start at $4.17/month
From Angkor Wat to El Castillo, hidden design reveals ancient purpose.
Explore enigmatic monuments from Angkor Wat to El Castillo as archaeology and engineering uncover what their builders understood. This series examines the geometry, knowledge, and meaning embedded in ancient structures, turning familiar ruins into intricate puzzles. Sign up to see how each revelation deepens the mystery and the achievement behind them.
Episode guide
6 episodesLove Secrets of Ancient Structures? It’s just the start.
Join now to unlock the whole library — thousands of award-winning documentaries beyond Secrets of Ancient Structures, from the deep ocean to deep space.
Trending Now
- New shows weeklyFresh documentaries land every week.
- Exclusive originalsAward-winning films you can’t stream anywhere else.
- Watch anywherePhone, tablet, web and TV — pick up where you left off.
- No commitmentNo contract. Cancel in a click.
Pick the plan that’s right for you.
Flexible plans, no contracts.
Thousands of documentaries across nature, history, space, and science.
- Watch in 4K on all your devices
- Download and watch offline
- Stream ad-free — cancel anytime
Cancel anytime, on either plan.
Thousands of documentaries across nature, history, space, and science.
- Up to 4K
- Offline downloads
- Ad-free