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ANCIENT MEGASTRUCTURES

Hagia Sofia: Dome Secrets

Explore the secrets in the building of the crowning glory of Hagia Sophia, a dome 56 metres high and 31 metres across. Find out how it was built.

The Alhambra
The most impressive monument to Muslim engineering in the Western world the Alhambra towers over...
(01:01)
The Alhambra: Wonder of Islam
Dominating the skyline of Granada in Southern Spain, The Alhambra is an architectural wonder...
(04:48)
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Megafactories: site
Hitler's Stealth Fighter: site
Ancient Megastructures: site
Six Degrees Could Change The World: site

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