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

The Inca Empire became the largest civilization in the Americas, stretching across vast and dangerous mountain terrain. Without writing or iron tools, they built an advanced system of roads, cities, ...

For centuries, the vanished Inca fortress of Ancocagua existed only in lore. Now, at a mountaintop site in Peru, researchers ...

The Inca Empire in South America, one of the most powerful pre-Columbian societies, was known for many innovations — such as the architecture of Machu Picchu, an extensive road network, and a system ...