Inca road system: Did you mean...?

Earth's solar system by NASA and Rawpixel.

An illustration of the solar system by Martin Kornmesser. From The International Astronomical Union.

The underground channel of a qanat in the Turfan water system in the Turpan Depression of Xinjiang, China.

Carsulae in Umbria, central Italy, was founded c. 300 BCE and only became a prosperous urban centre after it was connected by the Via Flaminia towards the end of the 3rd century BCE. It was granted the status of municipium and acquired a...

Intercultural referral model used in Dino Stagno Hospital, Traiguen, Chile.

The Wanka (also Wanca or Huanca) people occupied the highlands of ancient central Peru around Lake Junin and the Manataro, Chanchamayo and Tarma rivers. The culture flourished from the Middle to Late Horizon periods (600 CE - 1532 CE). Dwelling...

The Silk Road and Ancient Trade: In which John Green teaches you about the so-called Silk Road, a network of trade routes where goods such as ivory, silver, iron, wine, and yes, silk were exchanged across the ancient world, from China to...

Map of the Persian Royal Road from Susa to Sardes.

Remains of a Roman road in Tarsus, Cilicia.

Remains of a Roman road in Tarsus, Cilicia, modern-day Turkey.