Portus – port of Roman Empire
The most famous port of ancient Rome is probably the one in Ostia – the main port of the Republic of Rome. However, this river haven has not always been able to meet the needs of a rapidly growing metropolis. That is why in the first century CE Emperor Claudius founded Portus, an imperial seaport that was used continuously until the 8th century when a fleet resided there under the command of Pope Constantine (708-715).