Other objects associated with the coronation of Holy Roman Emperors can be found in Aachen, in the treasury of the Aachen Cathedral. The cathedral also houses a stone throne associated with Charlemagne, and was a traditional site for certain of the Imperial coronation ceremonies. The Aachen City Hall houses copies of several important items of the Imperial regalia, now in Vienna, which had previously been kept in their city. Both the old city hall and the core of the cathedral were once parts of the palace of Charlemagne.