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The American Museum of Natural History in NYC gets a cave-like extension; an arts center inspired by migrating birds is built on a lake in China; Boston University gains a fossil-free, Jenga-like tower.

How Did They Build That?

Boxes & Birds

A sculptural high-rise with rippling balconies breaks the mold in Chicago; Mammoth machines bore 26 miles of tunnels for an underground railroad beneath London's city streets.

Subways & Sightlines

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.

Heights & Balance

Challenges beset a sculptural new transportation hub for New York's World Trade Center; Amsterdam gains a building inspired by a mountain valley; a new launchpad for space travel prepares for liftoff in the New Mexico desert.

Fantastic & Futuristic

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Exploring the engineering and architectural masterpieces like The Copper in Manhattan to Gardens By the Bay in Singapore.

S3 E8 | Subways & Sightlines

E10 | Boxes & Birds

E8 | Subways & Sightlines

E5 | Heights & Balance

E1 | Fantastic & Futuristic