The Inca recognized the importance of guano and the islands where the so-called guano birds breed as central to the survival of their civilization — and they responded by implementing the first ever ...

The Inca created the largest Indigenous empire in the Americas across some of the harshest terrain on Earth. Their state ...

Thousands of miles of pathways through some of the most rugged land on earth form this six-country UNESCO World Heritage site. The giant interlocking stones form pathways and staircases over and ...

The Inca city in Peru is one of the most recognizable historical sites in the world. Built in the mid-15th century, it served as a royal estate for the rulers of the Inca Empire before the arrival of ...

Nestled on a mountain ridge in the Urubamba Valley, Machu Picchu was built as a palace that was part of a larger royal estate belonging to the Inca emperor Pachacuti (reigned ca. 1420–1472). A team of ...

The Incas have the double distinction of presiding over the largest empire of the ancient Americas and one of the shortest-lived. Sprawling along the Pacific Coast and across the Andes Mountains to ...

On the hills above Cusco, Peru, a series of zigzagging stone walls climbs the terrain in three massive tiers, built from ...

A stone box fished out of Lake Titicaca contains tiny items that add an intriguing twist to what’s known about the Inca empire’s religious practices and supernatural beliefs about the massive lake.

Machu Picchu is an Inca stone city laid out along a high ridge above Aguas Calientes in southern Peru, where terraces, plazas and temples cling to steep Andean slopes. Built in th ...