Among all the churches the Cologne cathedral (start of construction in 1248) is the purest embodiment of a Gothic cathedral which was added in 1996 to the
UNESCO World Heritage list. Its size is even enhanced by the enormous twin towers. Its impressive architecture holds a multitude of famous works of art, from colourful glass paintings, to the Gero Cross the oldest large-scale sculpture of the occident to the Sarcophagus of the Magi.