
Modern Marvels
The oldest flag manufacturer; the last US athletic shoe factory; strange alternative transportation.

The oldest flag manufacturer; the last US athletic shoe factory; strange alternative transportation.

The Chesapeake Bay Bridge and Tunnel stretches 17 miles connecting Virginia's easternmost landmass.

Bridges play a key role in the human quest to connect and unify.

One of the longest suspension bridges in the world connects upper and lower peninsulas of Michigan.

The 1,522-mile-long Alaskan Highway takes 11,000 soldiers to build.

The Akashi Kaikyo Bridge's main span is 50 percent longer than that of the Golden Gate.

The Erie Canal is responsible for making New York City a commercial capital.

During the 19th century, transcontinental railroads link California to the East.

Two ribbons of concrete span a body of water in Louisiana, forming a bridge.

Communists erect the wall to stop the flow of refugees to the West.

Skyscrapers; Empire State Building; Sears Tower; World Trade Center.

The art deco Chrysler Building stands out in the New York skyline.

Data lines; power; plumbing; photovoltaics; conserving energy.

Meet the loggers who started it all, and find out what happens on the journey from stump to sawmill.

The crash of the Hindenburg puts an end to the era of airships.

The technology behind the Winter Olympics, including the bobsled run, ski jump and speedskating.

A 2000 Ford Taurus gets dissected to demonstrate the evolution of the automobile's major systems.

The philosophy, architecture of today's U.S. prisons emerge from those of history.

Gustave Eiffel designs a tower for the 1887 Paris World's Fair.

Los Alamos scientists and engineers build the ultimate weapon of war in the interest of peace.