Ruins of Trajan's Bridge

Trajan's Bridge (Romanian: Podul lui Traian) over the Danube was a Roman segmental arch bridge, the first to be built over the lower Danube.For more than 1,000 years it was the longest arch bridge in both total and span length.

The bridge was constructed in 105 AD by the Greek architect Apollodorus of Damascus for the deployment of Roman troops in the war against Dacia.