Hundreds of years
before it became a
must-see tourist
destination, Machu
Picchu was a
spiritual retreat
for the Incan
elite. Tune in to
"The Wond
(more)
Hundreds of years before it became a must-see tourist destination, Machu Picchu was a spiritual retreat for the Incan elite. Tune in to "The Wonder List" Saturday night at 9 p.m. ET.
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