Building Rome’s Colosseum | Engineering the Impossible: The Colosseum

Discover the engineering secrets behind Rome’s Colosseum.
Engineering the Impossible: The Colosseum :
http://channel.nationalgeographic.com/channel/video/?source=4003
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Building Rome’s Colosseum | Engineering the Impossible: The Colosseum
https://youtu.be/EO1NQy4oyJs

National Geographic
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