New discoveries reveal Cusco, Peru, was more than just ancient stone walls. Specialists have found a large underground city ...

This video shows Machu Picchu, Peru, an ancient Inca settlement located high in the Andes Mountains above the Urubamba Valley ...

For centuries, the vanished Inca fortress of Ancocagua existed only in lore. Now, at a mountaintop site in Peru, researchers are zeroing in on a discovery that could reshape what we know of the empire ...