America has so many stories to tell. And nobody brings them to your home like Smithsonian Channel.

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Engineers create impossibly shaped buildings: Albany's Egg, a huge, sculpted theatre space, fit for a Rockefeller; a floating fortress in LA, protecting $2bn in art; and giant New York offices towering over America's busiest com.

How Did They Build That?

Sculptures & Skyscrapers

NASA's 3D-printed Mars habitat rehearses human life on the red planet. Seoul's historic city hall gains a 13-story glass wave. And in Dallas, 68,000 square feet of concrete galleries balance on legs that want to splay open under.

Space Homes & Glass Waves

Lord Foster's five-winged steel towers cool Abu Dhabi's national museum naturally. Robots 3D-print a steel bridge in Amsterdam & a concrete tower in Switzerland. And in Sydney, engineers pump out the harbour to build a fish market.

Wings & Waterlines

Zaha Hadid cuts the top off a mountain and builds a museum inside. A Vancouver tower rises clean over a 115-year-old church. And starchitect Santiago Calatrava spans 7 live railway tracks with a column-free glass and steel station.

Summits & Spires

America's stories told by the Smithsonian

SMITHSONIAN CHANNEL HD

Witness amazing buildings, bridges, lifts, and other structures that pushed structural concrete engineering to the edge.

Canals & Curves

In Chicago, twin concrete towers push the limits of high-rise design. Engineers conquer the sea to unite Sweden and Denmark. And in Sydney, Norman Foster and team take on the challenge of a new metro station that can't disrupt the busy streets above.

Tunnels & Towers

Witnessing amazing buildings, bridges, lifts and other structures that pushed structural concrete engineering to the edge.

Cables Cars & Rooftop Parks

Milwaukee commissions Calatrava to design a museum with 90-ton wings that take flight; Oslo tears down its national ski jump and rebuilds it for the World Championships; and in LA, a 235-foot tower is wrapped in steel bands.

Earthquakes & Exoskeletons

In Oklahoma, a sacred spiral mound rises on a former oilfield, honouring 39 tribes; London's crumbling Battersea Power Station is reborn with two million new bricks. And in Spain, Frank Gehry crowns a historic winery.

Reborn Buildings & Sacred Grounds

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S5 E4 | Tunnels & Towers