The Incas' road system consisted of nearly 25,000 miles of roads. They ran the length and breadth of their 2,500-mile-long empire.

A hiker on the Inca Trail, Peru
(Note: the best advice I can offer readers for hiking the Inca trail is to book as early as possible–six months would be ideal–wear good shoes, be in good shape, and arrive in the Cuzco area as many days as possible to acclimatise yourself to the altitude. A week […]