Cusco is more than a stopover to adjust to altitude on the way to Machu Picchu, it's ancient Inca ruins and agriculture laboratory, salt mines, bustling food markets, and spectacular plazas, make it well worth a longer stay.
Read MoreMachu Picchu has earned its place as a UNESCO World Heritage Site and as one of the new 7 Wonders of the World. It offers breathtaking views, photo opportunities with llamas, and impossibly precise architecture from the 15th century that aligns neatly with the sun during solstices and equinoxes.
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