In 7 BC, Augustus divided the city of Rome into 14 administrative regions (Latin regiones, sing. regio). These replaced the four regiones—or "quarters"—traditionally attributed to Servius Tullius, sixth king of Rome. They were further divided into official neighborhoods (vici).[1]
Originally designated by number, the regions acquired nicknames from major landmarks or topographical features within them. After the reign of Constantine the Great, the imperial city of Constantinople was also divided into fourteen regiones, on the Roman example: the 14 regions of Constantinople.[2]