A visit to the former Inca Empire reveals epic feats of construction and engineering that have withstood the test of time, all made without iron tools or draft animals. Over the course of several ...

You see, after two years of research to pinpoint the location of the “Lost City of the Incas” and raise money ... that practically touches the sky—a mystery kids will surely find compelling.

The Incas had a system of accounting that relied on the quipu ... The significance of the knots and colours remains a mystery. Maybe you can figure it out. These are some of the few quipu still in ...

Follow along as a multinational team of archaeologists, architects, and engineers attempts to solve the mystery of how the ... a Roman Colosseum, an Inca fortress, and Egyptian obelisks.