TV Schedule for Smithsonian Channel USA - Pacific

How Did They Build That? Tunnels & Towers

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.

How Did They Build That? Facelifts & Scaffolds

A museum building bends 1,100-glass tubes to form a facade and tunnels below the water table; a vast 11-storey glass atrium HQ is built on the former Berlin Wall site to represent unity.

How Did They Build That? ?Summit & Submerge

Building an eco-friendly visitor center in the permafrost on Colorado's Pikes Peak tests the team. A museum is constructed in a disused dry dock that's in danger of collapse.

How Did They Build That? Curved & Cables

A new performance center with a tent-like glass-and-steel lobby tests engineers in Kansas City; two twisting apartment towers make heads spin in Ontario.

How Did They Build That? Mirrors & Marble

Visiting Australia's One Central Park, the Oslo Opera House and the California Academy of Sciences in San Francisco to reveal their architectural secrets.