In 1271 a seventeen-year-old Venetian set out with his father and uncle for the court of Kublai Khan and did not come home for 24 years. Years later, in a Genoese prison, he dictated what he had seen to a fellow inmate, and The Travels of Marco Polo was the result.
The route follows the book from Venice and Acre to the Persian Gulf, across the Pamir highlands and the desert to Kublai's summer and winter capitals, south to Hangzhou and the port of Zayton, and home again. Some of the roads are reconstructed by scholars, and Polo sometimes exaggerates, so each stop notes where the evidence is thin.
In 218 BC the Carthaginian general Hannibal set out from Spain to attack Rome by the one route the Romans never expected: overland, across the Pyrenees, the Rhône and the Alps, with tens of thousands of soldiers, horses and 37 war elephants. Five months later he came down into the plain of the Po with a battered but unbeaten army, and within weeks had won his first two victories in Italy.
The route follows the march as told by the Greek historian Polybius, who wrote about seventy years later and walked the Alpine route himself. Nobody knows for certain where Hannibal crossed the Rhône or which pass he used, so several pins are marked speculative.
In the spring of 334 BC Alexander, the 22-year-old king of Macedon, crossed into Asia with an army of Macedonians and Greeks to make war on the Persian Empire. Eleven years later he had defeated the Persian king Darius III three times, taken Egypt, burned Persepolis and led his men to the rivers of the Punjab — and then died in Babylon at the age of 32, his empire stretching from Greece to India.
The route follows the campaign through its turning points, with Arrian's Anabasis, written four centuries later from earlier accounts, as the main guide. Several battlefields can only be placed approximately; their pins are marked as such.
