Engineering from Above soars over the planet to reveal the world's most jaw-dropping feats of engineering—spectacular icons, hidden gems, and bizarre structures that defy explanation. From the sky, familiar landmarks turn mysterious, raising urgent questions: Who built this? How? And why here?

Explore a massive defensive wall surrounding a historic Colombian city and see how a series of eerie metal structures protected the English coast during WW II; then visit a vast underground refuge in Turkey designed to protect tens of thousands.

Explore some of the world's remarkable engineering marvels.

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No overview is available.

No overview is available.

No overview is available.

No overview is available.

No overview is available.