# Ostia Antica

Ostia Antica (lit. 'Ancient Ostia') is an ancient Roman city and the port of Rome located at the mouth of the Tiber. It is near modern Ostia, 25 km (16 mi) southwest of Rome. Due to silting and the invasion of sand, the site now lies 3 km (2 mi) from the sea. The name Ostia (the plural of ostium) derives from Latin os 'mouth'.
Ostia is now a large archaeological site noted for the excellent preservation of its ancient buildings, magnificent frescoes and impressive mosaics. The city's decline after antiquity led to harbor deterioration, marshy conditions, and reduced population. Sand dunes covering the site aided its preservation. Its remains provide insights into a city of commercial importance. As in Pompeii, Ostia's ruins provide details about Roman urbanism that are not accessible within the city of Rome itself.

## History
### Origins

Ostia may have been Rome's first colonia. According to legend, Ancus Marcius, the fourth king of Rome, was the first to destroy Ficana, an ancient town that was only 17 km (11 mi) from Rome and had a small harbour on the Tiber, and then proceeded with establishing the new colony 10 km (6 mi) further west and closer to the sea coast. An inscription seems to confirm the establishment of the old castrum of Ostia in the 7th century BC. The oldest archaeological remains so far discovered date back to only the 4th century BC. The most ancient buildings currently visible are from the 3rd century BC, notably the Castrum (military camp); of a slightly later date is the Capitolium (temple of Jupiter, Juno and Minerva). The opus quadratum of the walls of the original castrum at Ostia provide important evidence for the building techniques that were employed in Roman urbanisation during the period of the Middle Republic.
Ostia probably developed originally as a naval base, and in 267 BC, during the first Punic war, it was the seat of the quaestor Ostiensis in charge of the fleet. During the 2nd century BC its role as a commercial port gradually became prevalent for the imports of grain for the city of Rome, and buildings began to spread outside the castrum.

### Civil wars

Ostia was a scene of fighting during the period of civil wars in the 80s BC. In 87 BC Marius attacked the city in order to cut off the flow of trade to Rome, aided by his generals Cinna, Carbo and Sertorius, and captured the city and plundered it.

### Sacking by pirates

In 68 BC, the town was sacked by pirates, who set the port on fire, destroyed the consular war fleet, and kidnapped two prominent senators. This attack caused such panic in Rome that Pompey the Great arranged for the tribune Aulus Gabinius to pass a law, the lex Gabinia, to allow Pompey to raise an army and destroy the pirates. Within a year, the pirates had been defeated.
The town was then re-built and provided with defensive walls started under Marcus Tullius Cicero according to an inscription.

### Imperial Ostia

Ostia was further developed during the first century AD under the influence of Tiberius, who ordered the building of the town's first forum.
Due to the small size of the harbour at Ostia, Claudius commissioned a new harbour at Portus on the northern mouths of the Tiber (Fiumara Grande). Insufficiently protected from storms, Claudius' project was later supplemented by the hexagonal harbour built by Trajan and finished in 113 AD. Trajan also developed the harbour of Civitavecchia (Centum Cellae), a relatively short distance away. These ports took business away from Ostia and began its commercial decline.
Nevertheless, Ostia grew to a peak of some 100,000 inhabitants in the 2nd and 3rd centuries AD.
Ostia itself was provided with all the services a town of the time could require; a large theatre, many public baths (such as the Thermae Gavii Maximi, or Baths at Ostia), numerous taverns and inns and a firefighting service. The popularity of the cult of Mithras is evident in the discovery of eighteen Mithraea. Ostia also contained the Ostia Synagogue, the earliest synagogue yet identified in Europe.

### Late-Roman and sub-Roman Ostia

Although it used to be thought that the city entered a period of slow decline after Constantine the Great made Portus a municipality, indicated by some apartment blocks being replaced by houses of the rich, recent excavations show that the town continued to thrive. Numerous baths are recorded as still operating in the 4th and 5th centuries with major repairs of the city's Neptune Baths in the 370s. During the 4th century, the city spilled over the southern walls to the sea south of Regions III and IV.
The poet Rutilius Namatianus reported the lack of maintenance of the city ports in 414 AD. This view has been challenged by Boin who states Namatianus' verse is a literary construct and inconsistent with the archaeological record.
Prosperity in the 5th century is indicated by repairs on baths (26 remained in operation during the 4th century), public buildings, church construction, street repaving, residential and business expansion beyond the perimeter of the south wall (the presence of a small harbour, the Porta Marina on the sea, is attested). A huge 4th century villa east of the Maritime baths was built. The river port on the western edge of the town was expanded with the navalia, a squarish basin built in from the river. A warehouse on the east side and, behind it, a large bath complex were built.
It became an episcopal see as part of the Diocese of Rome as early as the 3rd century AD. The episcopal church sponsored by Constantine the Great is located in the south-east of the city. The city was mentioned by St Augustine when he passed there in the late 4th century. On their way back to Africa after Augustine's conversion to Christianity, Augustine's mother, Saint Monica, died in 387 in Ostia. The church (titulus) of Santa Aurea in Ostia was built on her burial site.
After the fall of the Western Roman Empire in 476, Ostia fell slowly into decay as the population of Rome, 700–800,000 in AD 400 contracted to 200,000 or less in 500 AD. A naval battle, the Battle of Ostia, was fought there in 849 between Christians and Saracens; the remaining inhabitants moved to Gregoriopolis a short distance away.

## Surroundings

South of Ostia many rich villa-estates were developed from the Republican era along the coast road to Laurentum. Pliny described the route towards his villa there: “There are two different roads to it: if you go by that of Laurentum, you must turn off at the fourteenth mile-stone; if by that of Ostia, at the eleventh. Both of them are sandy in places, which makes it a little heavier and longer by carriage, but short and easy on horseback. The landscape affords plenty of variety, the view in some places being closed in by woods, in others extending over broad meadows, where numerous flocks of sheep and herds of cattle, which the severity of the winter has driven from the mountains, fatten in the spring warmth, and on the rich pasturage”.
Today several well-preserved Roman villas south of Ostia have been excavated in the area of Castel Fusano, including the Villa della Palombara excavated in 1989–2008.

## Excavations

The remains were used over the centuries as a quarry for marble for the palazzi built in Rome.
The Papacy started organising its own digs for sculptures with Pope Pius VII.
Under Benito Mussolini massive excavations were undertaken from 1939 to 1942 during which several remains, particularly from the Republican Period, were brought to light. These were interrupted when Italy became a major battlefield of World War II.
In the post-war period, the first volume of the official series Scavi di Ostia appeared in 1954; it was devoted to a topography of the town by Italo Gismondi and after a hiatus the research still continues today. Though untouched areas adjacent to the original excavations were left undisturbed awaiting a more precise dating of Roman pottery types, the "Baths of the Swimmer", named for the mosaic figure in the apodyterium, were meticulously excavated, in 1966–70 and 1974–75, in part as a training ground for young archaeologists and in part to establish a laboratory of well-understood finds as a teaching aid.
It has been estimated that two-thirds of the ancient town are as yet unexcavated.
In 2014, a geophysical survey using magnetometry, among other techniques, revealed the existence of a boundary wall on the north side of the Tiber enclosing an unexcavated area of the city containing three massive warehouses.
In 2025, excavations at Ostia Antica uncovered what may be the oldest Jewish ritual bath (mikveh) found outside Israel, dating to the late 4th or early 5th century. Located within a large Roman house, the bath features a deep immersion pool and an oil lamp with a menorah symbol, supporting its Jewish identification.

## Modern day

The site of Ostia Antica is open to the public. Finds from the excavation are housed onsite in the Museo Ostiense.

## Media

* Ostia was featured in the novels I, Claudius and Claudius the God, both written by British novelist Robert Graves. The novels include scenes set at Ostia spanning from the reign of Augustus to the reign of Claudius, including the departure of Agrippa to Syria and Claudius's reconstruction of the harbour. In the 1976 television series, Ostia was frequently mentioned but never actually seen.
* Ostia features in A War Within: The Gladiator by Nathan D. Maki. After an assassination attempt on Emperor Commodus the protagonists Antonius and Theudas escape by clinging to a barge on the Tiber, reaching Ostia, and stowing away on a trireme heading north to Ravenna.
* Ostia appears briefly towards the end of the Roman Empire section of the 1981 comedy film History of the World, Part I, where the main characters board a galleon (bearing the El Al logo) bound for Judaea. In the film, however, Ostia is only ever referred to as simply "the port".
* Ostia's beach and port serves as the location for the 1993 music video of the song "La solitudine" by Laura Pausini.
* Ostia is mentioned several times in the 2005 HBO/BBC historical drama series Rome.
* Ostia is mentioned in the 2000 film Gladiator, when the protagonist, Maximus, learns that his army is camped at Ostia and awaiting orders.
* One of the wonders buildable in the "Rise and Fall of the Roman Empire" mod for Sid Meier's Civilization III is called the "Portus Ostiae".
* Ostia is one of the inspirations for the setting of The Talos Principle.
* Ostia is the name of the Magic World's lost kingdom and the location of the gladiatorial games in the manga series Negima! Magister Negi Magi.
* Ostia is the name of the most important city of the Lycian Alliance in the Fire Emblem series.
* Ostia is mentioned in several novels in Lindsey Davis' Marcus Didius Falco series.
* Ostia is featured in the film Rome Adventure from 1962.
* Ostia is a central location in the children's novel series The Roman Mysteries by Caroline Lawrence, and its television adaption.

## Gallery

* Street and dwellings
* Temple of the Capitoline Triad: Jupiter, Juno, and Minerva
* The inscription originally placed on the main gate
* Theatrical masks, part of the architectural decoration of the Theatre (regio II, insula VII)
* Dolia embedded in the ground at Caseggiato dei dolii
* Forum Baths (frigidarium)
* Floor pavement. Room C of the House of Cupid and Psyche (regio I, insula XIV)
* Statue of Attis in the Shrine of Attis
* View of the archaeological site
* Via delle TombeV
* Room 5 of the House of the Painted Vaults. A wall painting of an erotic scene is on the south wall. 250 CE