The Basilica Ulpia stands among the remains of Trajan’s Forum in Rome. Inaugurated around 112 AD, this vast public building was about 170 metres long and served civic, legal and commercial purposes, not religious worship. A row of gray granite columns survives, giving a sense of the scale of the structure and the roof they once supported. Look across the site for traces of its layout, then continue to nearby Trajan’s Market. The ruins are also illuminated after dark, when they can be viewed from outside the grounds.
A civic building in Trajan’s Forum
The Basilica Ulpia was inaugurated around 112 AD as part of Trajan’s Forum. It took its name from Ulpius, the emperor’s family name, and was built for public life rather than religious worship. Courts, commercial activity and administrative business all took place here.
At roughly 170 metres long, it was the largest basilica in ancient Rome. Its position within the forum made it part of a civic complex, where public and commercial functions came together. The building’s size and decoration reflected the grandeur of Trajan’s reign.
The plan and the roof
The basilica had a rectangular plan with five aisles: a broad central space flanked by two narrower aisles on either side. Rows of Corinthian columns separated these areas. Marble, reliefs and sculptures decorated the interior, while a timber roof covered the building.
At the two ends were apse-like spaces used as tribunals, where magistrates held legal proceedings. This arrangement helps explain how the basilica worked as a public building: it could accommodate court business as well as commerce and meetings. Its form later influenced Roman and Christian basilicas.
Reading the remains
Much of the building has disappeared, but the surviving granite columns still show something of its scale. They are remnants of a much larger colonnade, with an estimated 96 columns once supporting the roof. The standing row offers a clear point of reference as you look across the remains of the basilica.
The site is part of the wider archaeological area of Trajan’s Forum. Trajan’s Market is nearby, and its museum or exhibition spaces may require a separate ticket. A museum visit connected with the Basilica Ulpia is also available for an additional fee. Specialist guided visits with an art historian are another option to ask about.
FAQ
Where is the Basilica Ulpia?
It is in Trajan’s Forum in Rome. Trajan’s Market is nearby.
What was the Basilica Ulpia used for?
It was a public building for legal proceedings, commerce and administrative business, rather than a place of worship.
What can you see at the site?
The remains include a row of gray granite columns and traces of the basilica’s layout. The ruins are illuminated after dark and can be viewed from outside the grounds.
