When did Impossible Engineering Season 7 Episode 4 air?
Impossible Engineering Season 7 Episode 4 aired on January 22, 2020.


Behind every seemingly impossible marvel of modern engineering is a cast of historic trailblazers who designed new building techniques, took risks on untested materials and revolutionised their field. Each episode details how giant structures, record-beating buildings, war ships and spacecraft are built and work. As the show revels in these modern day creations, it also leaps back in time to recount the stories of the exceptional engineers whose technological advances made it all possible.

The skinniest skyscraper in the world at 111 W. 57th Street, New York, will soon become the Big Apple's third tallest. Using an innovative, gravity-defying design, this colossal megastructure is breaking all the rules of engineering. Can engineers find a way to build this ultra-tall slender building?
Direct answers for episode-level questions and details.
Impossible Engineering Season 7 Episode 4 aired on January 22, 2020.
This episode runs for approximately 42 minutes.
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