Reconstructed Roman harbour temple, Roman temple ruins in Xanten, Germany

The reconstructed Roman harbour temple is a rebuilt ancient religious building inside the Archaeological Park Xanten, in the city of Xanten, Germany. It stands on its original foundations and features columns, a raised podium, and an enclosed inner room typical of provincial Roman religious architecture.

The temple was built in the 1st century CE as part of the urban planning of the Roman colony Colonia Ulpia Traiana, officially founded under Emperor Trajan. Over late antiquity, the city declined and the temple sank with its foundations beneath the ground.

The name Hafentempel refers to the temple's position by the Rhine harbour of Colonia Ulpia Traiana. Its cella walls were 1.65 m thick, and the surrounding portico enclosed a precinct of 68 by 94 m. The reconstruction shows the southern corner up to the gable, while most columns are indicated only as stumps.

The building sits within the Archaeological Park Xanten, a large open-air site best explored on foot. A visit works well on a clear day, since the temple is best seen from outside and the surrounding grounds leave plenty of room to walk around.

The temple was likely dedicated not to a single deity but to the imperial cult, making it a political space as much as a religious one. This connection between power and ritual was especially strong in Roman colonies along frontier rivers like the Rhine.