Ostia, Province of Roma, Lazio
- Population: about 250,000 inhabitants
- Zip/postal code: 00121 or 00122
- Dialing Area Code: +39 06
History - Antiquity
In 87 BC, the town was razed by Marius, and again in 67 BC it was sacked by pirates. After this second attack, the town was re-built and provided with protective walls by Cicero. The town was then further developed during the 1st century AD, mainly under the influence of Tiberius, who ordered the building of the first Forum, and also soon enriched by the construction of a new harbour on the northern mouths of the Tiber (which reaches the sea with a larger mouth in Ostia, Fiumara Grande, and a narrower one near to the current Fiumicino international airport).
The town was provided with all the services a town of the time could require; in particular, a famous lighthouse, the public latrinas organised for collective use as a series of seats, a large theatre, public baths and a firefighting service.
Ostia grew to 50,000 inhabitants in the 2nd century AD, but with the end of the Roman Empire, fell slowly into decay, and was finally abandoned in the 9th century due to repeated invasions and sackings by Arab pirates; the inhabitants moved to Gregoriopolis.