Trier's history begins in mid-first century BC, when Julius Caesar conquered Gaul and integrated the Mosel region. In 16 BC, Emperor Augustus established a city here, which makes Trier Germany's oldest city. It was the home of Roman emperors and was known as a second Rome north of the Alps.  Thus, the city is full of impressive Roman remains.  It survived the collapse of Rome and became an important center of Christianity, and it prospered throughout the Renaissance and the baroque periods.

Trier is on the Mosel river, in the middle of a wine producing region.  It is easily accessible from Frankfurt by train via Koblenz, and also it is only a short train ride from Luxembourg.