In the Christian tradition of European cultures, where ecclesiastical sanction authenticates monarchic power when a new monarch ascends the throne, the crown is placed on the new monarch's head by a religious official in a coronation ceremony. Some, though not all, early Holy Roman Emperors travelled to Rome at some point in their careers to be crowned by the pope. Napoleon, according to legend, surprised Pius VII when he reached out and crowned himself, although in reality this order of ceremony had been pre-arranged (see coronation).