Visit the Sacred Valley

Boulder-strewn ruins of the Vijayanagara empire along the Tungabhadra river.

Sanctuary of Apollo on the slopes of Mount Parnassus — home of the ancient oracle.

Twice as deep as the Grand Canyon, with condors riding the thermals past the Cruz del Condor viewpoint each morning.

Stand among the cloud-wrapped ruins of Machu Picchu, the 15th-century Inca citadel perched high above Peru's Sacred Valley

Walk among the 5,000-year-old pyramids of Caral, the oldest known city in the Americas

Colossal stone heads ringing a mountaintop royal tomb from the 1st century BC.

Xi'an's buried army of clay warriors.

The "museum without walls": grassy royal burial mounds, the Cheomseongdae observatory and Silla-dynasty treasures across the town.