Don Pedro ruled harshly. In 1542 he closed the Accademia Pontaniana. He instituted summary execution for petty theft on public streets and made it a capital crime to go armed at night in the city. He was ruthless in dealing with feudal barons in the countryside and encouraged their moving into the city within reach of a central authority. This breaking-up of land holdings began a trend to urbanization as both the landed class and the landless peasant class poured into Naples. By 1550, the population of 200,000 was second only to Paris in all of Europe. Within the city, he centralized administration, moving all courts onto the same premises, the Castel Capuano, also known as the "Vicaria".