How Did They Build That? (2021)

Learn how astronauts constructed the International Space Station while circling the Earth at 17,500 miles per hour; look at the meteorproof ship's power source and unique water-recycling technology; discover why it almost wasn't built at all.

Paying tribute to the brave, gravity-defying design of the U.S. National Medal of Honor Museum; travelling to Singapore for a look at a leaning tower of gambling, then exploring a New York City office building that lets the sun shine through.

Peek inside a cloud-inspired library in Canada that's built over a live railway; see how clever engineering helped a huge Seattle skyscraper go up without harming its iconic neighbour, then cross an Australian bridge that floats above a busy river.

Apartments hanging 164 feet above the water defy gravity in Amsterdam. Three rippling towers with the 83rd story left open to prevent it swaying transform Chicago's skyline. And Paris's Pompidou Centre reinvents museums.