Peruvian Central Railway
The highest railway in the world, the Peruvian Central Railway is an engineering marvel, climbing 13,000 ft on its trip from La Oroya to Lima, Peru. The railroad, which features 66 tunnels and 59 bridges, zigzags across valleys in order to minimize the steepness of its climb. There is an onboard doctor who administers oxygen to passengers who get altitude sickness.
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