Roman Monuments, Cathedral of St Peter and Church of Our Lady in Trier

Trier, which stands on the Moselle River, was a Roman colony from the 1st century AD and then a great trading centre beginning in the next century. It became one of the capitals of the Tetrarchy at the end of the 3rd century, when it was known as the &lsquo;second Rome&rsquo;. The number and quality of the surviving monuments are an outstanding testimony to Roman civilization.