The Hidden Wonder of the World
Season 15 Episode 2 | 26m 47s
The hidden wonders of one of America's greatest engineering feats are revealed in The Hidden Wonder of the World: The Transcontinental Railroad from Sacramento to Donner Summit. Travel to the summit of the Sierra Nevada and marvel at how the master engineers and builders of the 1860s accomplished this heroic deed.
Aired: 02/07/12Video has closed captioning.