Available Until: 1/19/2025
Runtime: 0:44
How Did They Build That? S3:05
Science
A 1.2 million square foot office building balances precariously on a 39 foot wide base in Chicago. A building named Pterodactyl lands on top of a Los Angeles parking garage. And the world's longest suspension footbridge is constructed in Czechia.
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| Catalog › Free On Demand › TV Entertainment › Smithsonian › A-Z | Free | HD |
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