Porta Asinaria Monument

Porta Asinaria is an ancient city gate in Rome, incorporated into the Aurelian Walls constructed in the late 3rd century AD. The gate survives as a combination of Roman walling with later medieval modifications.

The structure presents visible phases of construction from the imperial period through the Middle Ages, and it stands adjacent to modern streets in Rome’s southern sector. Although not a large tourist site, it is of interest to those tracing the city’s defensive architecture and urban development.

Erected with the Aurelian Walls in the late 3rd century AD, the gate has been altered and repaired in later centuries, particularly in the medieval period when many of Rome’s gates were fortified or adapted. It has continued to stand as part of the city’s historic fabric through modern times.

The gate is located on Rome’s southern perimeter within the historic city, near the Baths of Caracalla and the Lateran area, and is visible from nearby streets that follow the line of the ancient walls.

• Origins: Built as part of Rome’s outer defensive circuit in the late 3rd century AD, the gate retains visible medieval alterations and later repairs.

What to See#

• Gate structure: The surviving gate structure and associated medieval additions set within the Aurelian Walls of Rome, showing layers of ancient and later masonry.

The gate is a 5-10 minute walk east from San Giovanni (Lateran) basilica and a 15-20 minute walk from the Circo Massimo metro stop (Line B). Several bus lines serve Via Merulana and nearby streets; consult local maps for the exact pedestrian route from the basilica.

• Approach from the Lateran side and look back at the brick face in late afternoon-light brings out the Roman brickwork.
• Combine a visit with the nearby San Giovanni in Laterano basilica; the gate sits a short walk away and is often overlooked.
• Avoid rush hour on Via delle Terme di Caracalla; the surrounding streets are narrow and parking is scarce.