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Summit Tunnel
1:19
Summit Tunnel
Summit Tunnel is 1,659 feet long and through some of the hardest rock in North America.
Cape Horn
1:26
Cape Horn
To get the railroad line across Cape Horn, workers had to carve hard rock by hand.
Central Pacific Workmanship
0:27
Central Pacific Workmanship
The Central Pacific prided itself on its workmanship.
Tunneling and Tracklaying
0:43
Tunneling and Tracklaying
Workers dug tunnels through mountains in Utah and laid track in the Wyoming desert.
Interview with Linda Edquist
21:27
Interview with Linda Edquist
Conservation Specialist Linda Edquist demonstrates preservation techniques.
Golden Gate Bridge: Doing the Math
2:21
Golden Gate Bridge: Doing the Math
Ellis computed dozens of factors and completed the bridge's overall design in four months.
Camilo Jose Vergara, Photographer
8:00
Camilo Jose Vergara, Photographer
Photographer Camilo Jose Vergara discusses the visual impact of the World Trade Center.
Ed Koch, New York City Mayor, 1978-1989
5:01
Ed Koch, New York City Mayor, 1978-1989
Three-term mayor of New York City Ed Koch describes a moment on September 11, 2002.
Carol Willis, Architectural Historian
6:57
Carol Willis, Architectural Historian
An interview with architectural historian Carol Willis for New York: Center of the World.
Mike Wallace, Historian
7:47
Mike Wallace, Historian
Mike Wallace discusses the implications of a World Trade Center in New York City.
Mario M. Cuomo, New York Governor 1983-1994
3:47
Mario M. Cuomo, New York Governor 1983-1994
An interview with former New York governor Mario Cuomo.
Construction Begins on the Alaska Pipeline
0:40
Construction Begins on the Alaska Pipeline
Construction of the Alaska Pipeline began on March 27, 1975.
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