For hundreds of years, Andean people recorded information by tying knots into long cords. Will we ever be able to read them?

From ancient Babylon to the first modern-day national census, in Iceland, headcounts have been recorded on clay, in ... The 15th-century Inca empire recorded its population in a system of knots.

An unfinished swimming pool in Peru revealed pre-Inca remains, prompting officials to declare the site a historical monument.

Nearly 500 years after the collapse of the largest empire in the Americas, a single bridge remains from the Inca's extraordinary road system – and it's rewoven every year from grass.

At the height of the Inca Empire, it integrated nearly ten million people from a hundred nations. Today, much of the 24,000-mile network is still used by South America’s indigenous peoples.

Steeped in death, conquest, desire, and mystery, the legend of the lost Inca gold is guarded by remote, mist-veiled mountains in central Ecuador. Somewhere deep inside the unforgiving Llanganates ...

The Inca Empire (Radio Edit) You're Dead to Me Greg Jenner is joined by Professor Bill Sillar and comedian Sue Perkins to learn all about life and death in the South American Inca empire.

The Inca empire, which referred to itself as Tahuantinsuyu, spanned modern-day Argentina, Bolivia, Chile, Ecuador and Peru, according to Britannica.

The heaps of khipus emerged from garbage bags in the back of the tiny, one-room museum—clumps of tangled ropes the size of beach balls. Sabine Hyland smiled as she gazed down at them and said ...