We were all simply stunned when we entered the Dom. The Aachen Cathedral is…read more
a UNESCO World Heritage site. The Carolingian Octagon was formerly the Palatine Chapel from Charlemagne's Aachen Palace.
If the Old Town in Dubrovnik was built entirely from local limestone, then the Cathedral very obviously was built with stones and materials from all over, a testament to the city's wealth and influence.
https://www.aachenerdom.de/en/