Aachen

Aachen is a city in North Rhine-Westphalia, Germany, at the point where Germany borders on Belgium and the Netherlands.

The Aachen Cathedral was erected on the orders of Charlemagne in 786 AD and was on completion the largest dome north of the Alps. On his death Charlemagne's remains were interred in the cathedral and can be seen there to this date. The cathedral was extended several times in later ages, turning it into a curious and unique mixture of building styles.