The Porta Nigra (Latin for black gate) is a large Roman city gate in Trier, Germany. It is today the largest Roman city gate north of the Alps. It is designated as part of the Roman Monuments, Cathedral of St. Peter and Church of Our Lady in Trier UNESCO World Heritage Site.

I first visited Trier and in particular Porta Nigra back in 2005, when arrived here from neighboring Luxembourg. My latest trip to the Porta Nigra was in May 2017, during a few day trip in Germany.

The Porta Nigra in Trier Germany

The Porta Nigra in Trier Germany

The name Porta Nigra originated in the Middle Ages due to the darkened colour of its stone; the original Roman name has not been preserved. Locals commonly refer to the Porta Nigra simply as Porta.

The Porta Nigra was built in grey sandstone between 186 and 200 AD. The original gate consisted of two four-storied towers, projecting as near semicircles on the outer side. A narrow courtyard separated the two gate openings on either side. For unknown reasons, however, the construction of the gate remained unfinished. For example, the stones at the northern (outer) side of the gate were never abraded, and the protruding stones would have made it impossible to install movable gates. Nonetheless, the gate was used for several centuries until the end of the Roman era in Trier. It serves as an entrance to town.

Porta Nigra

Porta Nigra

The modern appearance of the Porta Nigra goes back almost unchanged to the reconstruction ordered by Napoleon. At the south side of the Porta Nigra, remains of Roman columns line the last 100 m of the street leading to the gate. Positioned where they had stood in Roman times, they give a slight impression of the aspect of the original Roman street that was lined with colonnades. It also has crowning cornice and parapet on its top.

The gate is today closed to cars, but stands right next to one of the main streets of Trier. In addition to the general pollution, the exhaust fumes of the passing cars have been damaging the stones for decades. Generally, however, the Porta Nigra is still in remarkable condition.

The Porta Nigra, including the upper floors, is open to visitors. In summer, guided tours are also offered by an actor dressed up as and portraying a centurion (a Roman army officer) in full armour.

New Trier High School in Winnetka, Illinois, USA, is named after the city of Trier, Germany, and New Trier's logo depicts the Porta Nigra. New Trier Logo

Trier Germany
Coordinates: 49.759722 6.643889