"Chapar Khaneh" (Persian: چاپارخانه, IPA: [tʃɒːˈpɒːɾ xɒːˈne], courier-house) is a Persian term for the postal service used during the Achaemenid era. The system was created by Cyrus the Great, the founder of the Persian Empire, and later developed by Darius the Great, as the royal method of communication throughout the empire. Each "Chapar Khaneh" was a station mainly located along the Royal Road, a 2500 km ancient highway, which stretched from Sardis to Susa, connecting most of the major cities of the empire.
- "Now the true account of the road in question is the following: Royal stations exist along its whole length, and excellent caravanserais; and throughout, it traverses an inhabited tract, and is free from danger. In Lydia and Phrygia there are twenty stations within a distance Of 94½ parasangs. On leaving Phrygia the Halys has to be crossed; and here are gates through which you must needs pass ere you can traverse the stream. A strong force guards this post. When you have made the passage, and are come into Cappadocia, 28 stations and 104 parasangs bring you to the borders of Cilicia, where the road passes through two sets of gates, at each of which there is a guard posted. Leaving these behind, you go on through Cilicia, where you find three stations in a distance of 15½ parasangs. The boundary between Cilicia and Armenia is the river Euphrates, which it is necessary to cross in boats. In Armenia the resting-places are 15 in number, and the distance is 56½ parasangs. There is one place where a guard is posted. Four large streams intersect this district, all of which have to be crossed by means of boats. The first of these is the Tigris; the second and the third have both of them the same name, though they are not only different rivers, but do not even run from the same place. For the one which I have called the first of the two has its source in Armenia, while the other flows afterwards out of the country of the Matienians. The fourth of the streams is called the Gyndes, and this is the river which Cyrus dispersed by digging for it three hundred and sixty channels. Leaving Armenia and entering the Matienian country, you have four stations; these passed you find yourself in Cissia, where eleven stations and 42½ parasangs bring you to another navigable stream, the Choaspes, on the banks of which the city of Susa is built. Thus the entire number of the stations is raised to one hundred and eleven; and so many are in fact the resting-places that one finds between Sardis and Susa."
The "Chapars" were express couriers who were provided with fresh supplies and horses at each station along the way, allowing them to quickly complete their way without having to procure supplies on their own or wait for their horse to rest.
- Xenophon (1855). "The Cyropaedia": or, Institution of Cyrus, and the Hellenics, or Grecian history. (Literally translated from the Greek of Xenophon).
- Pierre Briant (2006). From Cyrus to Alexander; a History of the Persian Empire. Eisenbrauns. pp. 62–64. ISBN 9781575061207.
- Herodotus. "The History - Herodotus". Retrieved Jan 15, 2011.