Shukhov tower, Moscow, Russia

Erected in the 1920s, this broadcasting tower should have been 1,150 ft (350 m) tall, but never made it past 490 ft (150 m) due to a shortage of steel during the Civil War. Its designer, Vladimir Shukhov, was the first engineer to use the lattice-style technique to make the steel shell subject to minimum wind load, the main design challenge for high-rise structures.

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