On Christmas night in the 19 th century, Charlemagne was crowned emperor of the Holy Roman Empire by Leone III in St. Peter's, Rome. " Roman " because it wants to restore the greatness of the ancient Roman's empire (even if geographically it has nothing to do with Rom, it is rather Central European, with Aachen as capital, and Charlemagne is of Franco-German lineage) while " Sacred " distinguishing it from the old empire, because it recognizes the Christian religion and assumes i ...