Peru

'Lost City' no more, Machu Picchu feels the strain of booming tourism

'Lost City' no more, Machu Picchu feels the strain of booming tourism

Peru's Machu Picchu — heralded as the "Lost City of the Incas" by American explorer Hiram Bingham, who rediscovered the largely forgotten site more than 100 years ago — has evolved into a tourist magnet.

Buses full of visitors regularly zigzag up and down the road that leads to this bucket-list destination built centuries ago, high in the Andes.

During the reign of the once-powerful Inca, the citadel was occupied by fewer than 1,000 people at any given time, according to historian Hugh Thomson, author of "The White Rock: An Exploration of the Inca Heartland."

Last year, more than 5,000 people on average walked the paths of Machu Picchu daily during...

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