The cathedral obtained its present shape in the course of more than a millennium. The core of the Aachen cathedral is the Palatine Chapel; being surprisingly small in comparison to the later additions, at the time of its construction it was the largest dome north of the Alps. Its fascinating architecture with Classical, Byzantine and Germanic-Franconian elements is the essence of a monumental building of great importance: for 600 years, from 936 to 1531, the Aachen cathedral was the church of coronation for 30 emperors of the Holy Roman Empire.
