A visit to the former Inca Empire reveals epic feats of construction and engineering that have withstood the test of time, ...

On the morning of July 24, 1911, an enterprising lecturer-explorer from Yale University set off in a cold drizzle to investigate rumors of ancient Inca ruins ... is formed of buildings, plazas ...

They established their capital of Cusco around the 12th century. Inca architecture often involved massive stones, which were transported via ramps and meticulously carved to fit together perfectly.

It ascends past Andean cloud forests to Warmiwañusca, the infamous "Dead Woman's Pass" at 4,215m, before descending to the ancient Inca citadel of Machu Picchu, one of the Seven New Wonders of ...