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The ancient Roman amphitheatre at Ostia Antica, surrounded by pine trees.

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The Heart of the Ancient City

Discover the central civic and commercial core of ancient Ostia. This area houses the most prominent public buildings from the city's peak.

Photo: tour listing on Viator

Ostia Antica served as the grand harbor city of ancient Rome. The center of this 150-hectare archaeological site contains the primary public and commercial structures.

You will walk along the main arterial roads and stand inside a massive amphitheater. Use this central zone to orient yourself before exploring the residential sectors.

Tourists walking along a stone path bordered by ruins and pine trees.
Photo: tour listing on Viator
01

Decumanus Maximus

30 minutesMain street

This is the main arterial street that cuts completely through the ancient city. It is lined with the arcades of former shops, taverns, and homes. Look closely at the paving stones to see the ancient ruts left by heavy Roman carts.

A scenic view of the archaeological site with trees and ancient brick structures.
Photo: tour listing on Viator
02

Roman Theatre (Teatro Romano)

20 minutesPanoramic views

This massive, semi-circular amphitheater originally held up to 4,000 spectators. It was built in the 1st century BC and is still used for summer concerts today. Walk up to the highest tiers for a panoramic view of the ancient city.

Large brick ruins with a grand staircase and a broken marble pillar in front.
Photo: tour listing on Viator
03

Piazzale delle Corporazioni

20 minutesTrade guild mosaics

The grand Square of the Guilds sits just behind the theater. This was once the bustling hub of Ostia's import and export merchants. Examine the preserved floor mosaics that denote different trade guilds, such as grain merchants and shipbuilders.

Extensive brick walls and foundations of ancient buildings under a blue sky.
Photo: tour listing on Viator
04

Capitolium and Forum

15 minutesCenter intersection

This is the main public square of Ostia. It is dominated by the imposing Capitolium, a towering brick temple dedicated to Jupiter, Juno, and Minerva. Use this spot to orient yourself, as it marks the intersection of the city's two main roads.

Tour the City Core

A row of ancient columns standing in the ruins of Ostia Antica.
Ostia Antica Semi Private Tour from Rome4 h 30 min 4.9 (274)from $90
semi-private tourfrom $90 on Viator
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