The historic façade is already an indication of the building’s glorious history: 50 rulers, 31 of whom were crowned in Aachen, surround the central figures of Charlemagne, the Holy Mary and Pope Leo III. In the elaborately decorated rooms, too, the story of the city hall, which was built on the historic site of the great palace hall of Emperor Charlemagne, is brought to life. In the coronation hall, where formerly the rulers took a meal after being crowned, copies of the imperial regalia remind us of this glorious era today.
https://www.aachen-tourismus.de/en/discover/sights/town-hall/