Trier

Trier is the oldest seat of a Christian bishop north of the Alps.  In the Middle Ages, the Archbishop of Trier was an important ecclesiastical prince, as the Archbishop of Trier controlled land from the French border to the Rhine.  He was also one of the seven electors of the Holy Roman Empire.

The Porta Nigra is the large Roman city gate in Trier.  It is today the largest Roman city gate north of the Alps and has bee designated a World Heritage Site.

Kaiserthermen is the best of Roman Baths, with winding underground passagess you can negotiate of get lost in, depending on your sense of direction.

Dom und LiebFrauen