From the Gateway Arch, Rockefeller Center, the Sears Tower, and the Empire State Buiding to the carvings on Mount Rushmore, the Golden Gate Bridge, the Space Needle and Grand Central Terminal, the U.S. has dozens of impressive, important, and iconic structures. Which ones have you been to? Which has had the biggest impact on its local community and on the country? Which one is your favorite?
The Pennsylvania Railroad Company accomplished an enormous engineering feat, but destroyed a great architectural monument.
Native Alaskans, oil company representatives, environmentalists, politicians, and others tell the story of the 800-mile pipeline.
In 1960, Francis Gary Powers' U-2 spy plane was shot down over the Soviet Union.
Robert Noyce's invention of the microchip launched the world into the Information Age.
The remarkable story of mid-19th century ingenuity and perseverance during the laying of the transatlantic telegraph cable between North America and Europe.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.
Equipment failure, human error and bad luck led to the country's worst nuclear accident in 1979.
Begun during the Civil War, the transcontinental railroad employed 20,000 men, mostly immigrants, who built the iron road with their bare hands.