Everything was organised and regulated by the state. You had the masters of the road, the masters of the bridges, thekhipu - a knotted device that kept track of people on the road, products, organised censuses of people and news from everywhere in the empire."
Examples of the khipu and 140 other objects - some more than 2,000 years old - are included in the exhibition to help illustrate the development of the Inca Road and its spiritual concepts.