First Consul Napoleon Bonaparte moved into the Tuileries Palace on 19 February 1800 and immediately began to re-establish calm and order after the years of uncertainty and terror of the Revolution. He made peace with the Catholic church; masses were held again in the Cathedral of Notre Dame, priests were allowed to wear ecclesiastical clothing again, and churches to ring their bells. To re-establish order in the unruly city, he abolished the elected position of the Mayor of Paris, and replaced it with a Prefect of the Seine and a Prefect of Police, both appointed by him. Each of the twelve arrondissements had its own mayor, but their power was limited to enforcing the decrees of Napoleon's ministers.