Inca road system: Did you mean...?

A section of surviving Roman road near Cirauqui in northern Spain. The curb stones can be clearly seen, a common feature of Roman roads.

A photograph of a macadamised road taken in the 1850s. The macadamised road, that is, a hard and relatively smooth road surface made using two layers of stones (one aggregate layer and a top layer of very small stones), was first...

An Inca circular terracing used to increase agricultural yield. Moray, Peru, 15-16th century CE.

A colonial-era illustration depicting Inca farmers using traditional tools such as the foot plough. By the native chronicler Felipe Guaman Poma de Ayala, c. 1613 CE.

An Inca ceramic dish with a handle in the form of a bird. Peru, 1476-1534 CE. (St. Louis Art Museum, Missouri)

Inca qollqa (storehouses) used for storing grain and other foodstuffs. 15-16th century CE, Ollantaytambo.

The Shushtar Hydraulic System is a Sasanian era (3rd century CE) water irrigation system in Shushtar in Iran that included watermills, dams, tunnels and canals. The mills, one of which is still functioning, were used...

The entrance to the water system at Tel Gezer in central Israel. This photo was taken during the 2011 excavations of the water system by the New Orleans Baptist Theological Seminary. The water system is believed...

An 1846 painting by John Everett Millais titled "Pizarro Seizing the Inca of Peru". The scene shows the conquistador Francisco Pizarro (c. 1478-1541) capturing the Inca ruler Atahualpa at the battle of Cajamarca in...

Earth's solar system by NASA and Rawpixel.