Germany Aachen Cathedral Interior

One of the oldest cathedral buildings in Europe, Aachen Cathedral was constructed as the royal chapel of the Palace of Aachen of Emperor Charlemagne, who was buried there in 814. From 936 to 1531, the original Palatine Chapel saw the coronation of thirty-one German kings and twelve queens. Later, much expanded, it was a minster and collegiate church, becoming a cathedral briefly from 1803 to 1825, and again in 1930 when the Diocese of Aachen was revived. In 1978, Aachen Cathedral was one of the first 12 sites to be listed on the UNESCO list of World Heritage Sites, because of its exceptional artistry, architecture, and central importance in the history of the Holy Roman Empire.

You need to buy a ticket (1€) to take photos. Someone walks around inside to collect the money.

The cathedral is in a pedestrian zone.